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Experimental Physics — JEE Main & Advanced Physics PYQs

175 previous year questions from Experimental Physics with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

175 questionsPhysicsSolutions on every page
1

Two thin wires, Wire-1 of diameter 0.650 mm and Wire-2 of unknown diameter d are given. To obtain the value of d , the diameters of the two wires are measured with a screw gauge. T

JEE Advanced 2026 Solution View → 2

In a Vernier calipers, when both jaws touch each other, zero of the Vernier scale is shifted to the right of zero of the main scale and 7^ th Vernier division coincides with a main

JEE Main 2026 Solution View → 3

In a screw gauge when the circular scale is given five complete rotations it moves linearly by 2.5 mm. If the circular scale has 100 divisions, the least count of screw gauge is __

JEE Main 2026 Solution View → 4

In a screw gauge the zero of main scale reference line coincides with the fifth division of the circular scale when two studs are in contact. There are 100 divisions in circular sc

JEE Main 2026 Solution View → 5

In an experiment, a set of reading are obtained as follows - 1.24 ~mm , 1.25 ~mm , 1.23 ~mm , 1.21 mm. The expected least count of the instrument used in recording these readings i

JEE Main 2026 Solution View → 6

When both jaws of vernier callipers touch each other, zero mark of the vernier scale is right to zero mark of main scale, 4^ th mark on vernier scale coincides with certain mark on

JEE Main 2026 Solution View → 7

In a vernier callipers, 50 vernier scale divisions are equal to 48 main scale divisions. If one main scale division =0.05 ~mm , then the least count of the vernier callipers is _ _

JEE Main 2026 Solution View → 8

In a screw gauge, the zero of the circular scale lies 3 divisions above the horizontal pitch line when their metallic studs are brought in contact. Using this instrument thickness

JEE Main 2026 Solution View → 9

Figure 1 shows the configuration of main scale and Vernier scale before measurement. Fig. 2 shows the configuration corresponding to the measurement of diameter D of a tube. The me

JEE Advanced 2025 Solution View → 10

For the determination of refractive index of glass slab, a travelling microscope is used whose main scale contains 300 equal divisions equals to 15 cm. The vernier scale attached t

JEE Main 2025 Solution View → 11

A tiny metallic rectangular sheet has length and breadth of 5 mm and 2.5 mm , respectively. Using a specially designed screw gauge which has pitch of 0.75 mm and 15 divisions in th

JEE Main 2025 Solution View → 12

The least count of a screw guage is 0.01 mm . If the pitch is increased by 75 % and number of divisions on the circular scale is reduced by 50 % , the new least count will be _____

JEE Main 2025 Solution View → 13

Given below are two statements : Statement I : In a vernier callipers, one vernier scale division is always smaller than one main scale division. Statement II : The vernier constan

JEE Main 2025 Solution View → 14

One main scale division of a vernier caliper is equal to m units. If n ^ th division of main scale coincides with (n+1)^ th division of vernier scale, the least count of the vernie

JEE Main 2024 Solution View → 15

Least count of a vernier caliper is 1 20 ~N ~cm . The value of one division on the main scale is 1 ~mm . Then the number of divisions of main scale that coincide with N divisions o

JEE Main 2024 Solution View → 16

There are 100 divisions on the circular scale of a screw gauge of pitch 1 ~mm . With no measuring quantity in between the jaws, the zero of the circular scale lies 5 divisions belo

JEE Main 2024 Solution View → 17

The diameter of a sphere is measured using a vernier caliper whose 9 divisions of main scale are equal to 10 divisions of vernier scale. The shortest division on the main scale is

JEE Main 2024 Solution View → 18

In a vernier calliper, when both jaws touch each other, zero of the vernier scale shifts towards left and its 4^ th division coincides exactly with a certain division on main scale

JEE Main 2024 Solution View → 19

While measuring diameter of wire using screw gauge the following readings were noted. Main scale reading is 1 ~mm and circular scale reading is equal to 42 divisions. Pitch of scre

JEE Main 2024 Solution View → 20

A vernier callipers has 20 divisions on the vernier scale, which coincides with 19^ th division on the main scale. The least count of the instrument is 0.1 ~mm . One main scale div

JEE Main 2024 Solution View → 21

10 divisions on the main scale of a Vernier calliper coincide with 11 divisions on the Vernier scale. If each division on the main scale is of 5 units, the least count of the instr

JEE Main 2024 Solution View → 22

The measured value of the length of a simple pendulum is 20 cm with 2 mm accuracy. The time for 50 oscillations was measured to be 40 seconds with 1 second resolution. From these m

JEE Main 2024 Solution View → 23

If 50 Vernier divisions are equal to 49 main scale divisions of a travelling microscope and one smallest reading of main scale is 0 . 5 mm the Vernier constant of travelling micros

JEE Main 2024 Solution View → 24

Given below are two statements: one is labelled as Assertion(A) and the other is labelled as Reason (R). Assertion (A) : In Vernier calliper if positive zero error exists, then whi

JEE Main 2024 Solution View → 25

Identify the physical quantity that cannot be measured using spherometer :

JEE Main 2024 Solution View → 26

In an experiment with vernier callipers of least count 0 . 1 mm , when two jaws are joined together the zero of vernier scale lies right to the zero of the main scale and 6 th divi

JEE Main 2023 Solution View → 27

In a screw gauge, there are 100 divisions on the circular scale and the main scale moves by 0 . 5   mm on a complete rotation of the circular scale. The zero of circular scale

JEE Main 2023 Solution View → 28

When two resistance R 1 and R 2 connected in series and introduced into the left gap of a meter bridge and a resistance of 10 Ω is introduced into the right gap, a null point

JEE Main 2023 Solution View → 29

In a metre bridge experiment the balance point is obtained if the gaps are closed by 2   Ω and 3   Ω . A shunt of X   Ω is added to 3   Ω re

JEE Main 2023 Solution View → 30

Area of the cross-section of a wire is measured using a screw gauge. The pitch of the main scale is 0 . 5 mm . The circular scale has 100 divisions and for one full rotation of the

JEE Advanced 2022 Solution View → 31

A travelling microscope has 20 divisions per cm on the main scale while its Vernier scale has total 50 divisions and 25 Vernier scale divisions are equal to 24 main scale divisions

JEE Main 2022 Solution View → 32

In an experiment to find out the diameter of wire using screw gauge, the following observation were noted: (a) Screw moves 0 . 5 mm on main scale in one complete rotation (b) Total

JEE Main 2022 Solution View → 33

The one division of main scale of vernier callipers reads 1 mm and 10 divisions of Vernier scale is equal to the 9 divisions on main scale. When the two jaws of the instrument touc

JEE Main 2022 Solution View → 34

In a Vernier Caliper 10 divisions of Vernier scale is equal to the 9 divisions of main scale. When both jaws of Vernier calipers touch each other, the zero of the Vernier scale is

JEE Main 2022 Solution View → 35

A screw gauge of pitch 0 . 5 mm is used to measure the diameter of uniform wire of length 6 . 8 cm , the main scale reading is 1 . 5 mm and circular scale reading is 7 . The calcul

JEE Main 2022 Solution View → 36

The Vernier constant of Vernier callipers is 0 . 1 mm and it has zero error of - 0 . 05 cm . While measuring diameter of a sphere, the main scale reading is 1 . 7 cm and coinciding

JEE Main 2022 Solution View → 37

A student in the laboratory measures thickness of a wire using screw gauge. The readings are 1 . 22 mm , 1 . 23 mm , 1 . 19 mm and 1 . 20 mm . The percentage error is x 121 % . The

JEE Main 2022 Solution View → 38

A travelling microscope is used to determine the refractive index of a glass slab. If 40 divisions are there in 1 cm on main scale and 50 Vernier scale divisions are equal to 49 ma

JEE Main 2022 Solution View → 39

In a vernier callipers, each cm on the main scale is divided into 20 equal parts. If tenth vernier scale division coincides with nineth main scale division. Then the value of verni

JEE Main 2022 Solution View → 40

In order to measure the internal resistance r 1 of a cell of emf ε , a meter bridge of wire resistance R 0 = 50 Ω , a resistance R 0 2 , another cell of emf ε 2 (int

JEE Advanced 2021 Solution View → 41

The smallest division on the main scale of a Vernier calipers is 0 . 1 cm . Ten divisions of the Vernier scale correspond to nine divisions of the main scale. The figure below on t

JEE Advanced 2021 Solution View → 42

The diameter of a spherical bob is measured using a vernier callipers. 9 divisions of the main scale, in the vernier callipers, are equal to 10 divisions of vernier scale. One main

JEE Main 2021 Solution View → 43

In a Screw Gauge, fifth division of the circular scale coincides with the reference line when the ratchet is closed. There are 50 divisions on the circular scale, and the main scal

JEE Main 2021 Solution View → 44

Assertion A : If in five complete rotations of the circular scale, the distance travelled on the main scale of the screw gauge is 5 mm and there are 50 total divisions on a circula

JEE Main 2021 Solution View → 45

Student A and student B used two screw gauges of equal pitch and 100 equal circular divisions to measure the radius of a given wire. The actual value of the radius of the wire is 0

JEE Main 2021 Solution View → 46

The vernier scale used for measurement has a positive zero error of 0 . 2 mm . If while taking a measurement it was noted that 0 on the vernier scale lies between 8 . 5 cm and 8 .

JEE Main 2021 Solution View → 47

One main scale division of a vernier callipers is a cm and n th division of the vernier scale coincide with n - 1 th division of the main scale. The least count of the callipers in

JEE Main 2021 Solution View → 48

The pitch of the screw gauge is 1 mm and there are 100 divisions on the circular scale. When nothing is put in between the jaws, the zero of the circular scale lies 8 divisions bel

JEE Main 2021 Solution View → 49

A student measuring the diameter of a pencil of circular cross-section with the help of a vernier scale records the following four readings 5 . 50 mm , 5 . 55 mm , 5 . 34 mm , 5 .

JEE Main 2020 Solution View → 50

A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch scale marking, prior to use. Upon one complete rotation of the circular scale

JEE Main 2020 Solution View → 51

Using screw gauge of pitch 0 . 1 cm and 50 divisions on its circular scale, the thickness of an object is measured. It should correctly be recorded as,

JEE Main 2020 Solution View → 52

The least count of the main scale of a vernier calipers is 1 mm . Its vernier scale is divided into 10 divisions and coincide with 9 divisions of the main scale. When jaws are touc

JEE Main 2020 Solution View → 53

If the screw on a screw-gauge is given six rotations, it moves by 3 m m on the main scale. If there are 50 divisions on the circular scale the least count of the screw gauge is:

JEE Main 2020 Solution View → 54

What is the percentage error in the physical quantity A If it is related to four other physical quantities a , b , c and d as A = a 2 b 3 d c ? The percentage error in measurement

NTA Abhyas JEE Main 2020 Solution View → 55

A student measures the distance covered and time taken by a body under free fall which was initially at rest. He uses this data for estimating g , the acceleration due to gravity.

NTA Abhyas JEE Main 2020 Solution View → 56

In the measurement of resistance of a wire using Ohm's law, the plot between V and I is drawn as shown, then resistance of given wire will be

NTA Abhyas JEE Main 2020 Solution View → 57

A galvanometer coil has a resistance 90 Ω and full-scale deflection current 10 mA . A 910 Ω resistance is connected in series with the galvanometer to make a voltmeter. If the leas

NTA Abhyas JEE Main 2020 Solution View → 58

The length of an object is measured using a vernier system whose main scale is 30 cm long with 600 divisions. If 19 divisions of the main scale coincide with 20 divisions of the ve

NTA Abhyas JEE Main 2020 Solution View → 59

The main scale of a vernier calliper reads 10 mm in 10 divisions. 10 divisions of vernier scale coincide with 9 divisions of the main scale. When the two jaws of the callipers touc

NTA Abhyas JEE Main 2020 Solution View → 60

Consider the vernier callipers shown below. The instrument has no zero error. If 1 m . s . d = 1 mm and 7 m . s . d = 8 v . s . d , then what is the length (in mm ) of the rod show

NTA Abhyas JEE Main 2020 Solution View → 61

A vernier calliper has 20 divisions on the vernier scale which coincide with 19 divisions on the main scale. The least count of the instrument is 0 . 1 mm . The length of one main

NTA Abhyas JEE Main 2020 Solution View → 62

A glass hemisphere μ = 1.5 has a radius of curvature of 16 cm . A small object O is located on its axis halfway between the plane and spherical surface. The distance between two im

NTA Abhyas JEE Main 2020 Solution View → 63

The main scale of a vernier calliper reads in mm and its vernier scale is divided into 8 divisions, which coincides with 7 divisions of the main scale. It was also observed that, w

NTA Abhyas JEE Main 2020 Solution View → 64

A screw gauge with a pitch of 0.5  mm and a circular scale with 50 divisions is used to measure the thickness of a thin sheet of aluminum. Before starting the measurement, it

NTA Abhyas JEE Main 2020 Solution View → 65

In an experiment to determine the resistance of a galvanometer by half deflection method, the circuit shown is used. In one set of readings, if R = 1 0 Ω and S = 4 Ω , then the res

NTA Abhyas JEE Main 2020 Solution View → 66

A convex lens forms inverted image of a real object on a fixed screen. The size of image is 9 cm . When lens is displaced 40 cm along principle axis it again forms a real image of

NTA Abhyas JEE Main 2020 Solution View → 67

In an experiment on the specific heat of a metal, a 0.20 kg block of the metal at 150°C is dropped in a copper calorimeter (of water equivalent 0.025 kg) containing 150 cm 3 of wat

NTA Abhyas JEE Main 2020 Solution View → 68

A ray of light R 1 is incident on a glass slab at an angle equal to critical angle of glass-air system. The refracted ray R 2 undergoes partial reflection and refraction at other s

NTA Abhyas JEE Main 2020 Solution View → 69

A galvanometer coil has a resistance 90 Ω and full scale deflection current 10 mA. A 910 Ω resistance is connected in series with the galvanometer to make a voltmeter. If the least

NTA Abhyas JEE Main 2020 Solution View → 70

A galvanometer of resistance 25 Ω is connected to a battery of 2 V along with a resistance of 3000 Ω . In this case, a full-scale deflection of 30 units is obtained in the galvanom

NTA Abhyas JEE Main 2020 Solution View → 71

In an experiment for the determination of the speed of sound in air using the resonance method, the length of the air column that resonates in the fundamental mode with a tuning fo

NTA Abhyas JEE Main 2020 Solution View → 72

The length of a magnet is large compared to its width and breadth. The time period of its oscillation in a vibration magnetometer is 2 s . The magnent is cut into three equal parts

NTA Abhyas JEE Main 2020 Solution View → 73

Graph of position of image vs position of a point object from a convex lens is shown in the figure. The focal length of the lens is –

NTA Abhyas JEE Main 2020 Solution View → 74

A glass prism of angle A = 6 0 ∘ gives a minimum angle of deviation θ = 3 0 ∘ with the maximum error of 1 ∘ when a beam of parallel light passed through the prism during an experim

NTA Abhyas JEE Main 2020 Solution View → 75

The distance advanced by the screw of a screw gauge is 2   m m in 4 rotations. Its cap is divided into 50 divisions. There is no zero error. If the screw reads 3 divisions on

NTA Abhyas JEE Main 2020 Solution View → 76

A standard cell of 1.08 V is balanced by the potential difference across 90 c m of a 1 meter, long wire supplied by a cell of emf 2 V through a series resistor of resistance 2 Ω .

NTA Abhyas JEE Main 2020 Solution View → 77

Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively and resistance 8 Ω each. They are connected in parallel with a cell of emf 4 V and negligible inte

NTA Abhyas JEE Main 2020 Solution View → 78

The length of a magnet is large compared to its width and breadth. The time period of its oscillation in a vibration magnetometer is 150 ms . The magnet is cut along its length int

NTA Abhyas JEE Main 2020 Solution View → 79

Consider the vernier calipers as shown, the instrument has no zero error. What is the length of the rod (in mm ) shown, if 1 msd = 1 mm ? Use 7 msd = 8 vsd .

NTA Abhyas JEE Main 2020 Solution View → 80

A professor reads a greeting card received on his 50th birthday with + 2.5 D glasses keeping the card 25 cm away. Ten years letter, he reads his farewell letter with the same glass

NTA Abhyas JEE Main 2020 Solution View → 81

The figure shown below is a screwgauge. When the circular scale division matches the main scale at 43, the 6 . 5 m m mark on the main scale is just visible. The main scale has 1 2

NTA Abhyas JEE Main 2020 Solution View → 82

Smallest division on the main scale of given Vernier calipers is 0.5 m m . Vernier scale has 25 divisions and these coincide with 24 main scale divisions. The least count of Vernie

NTA Abhyas JEE Main 2020 Solution View → 83

In a meter Bridge experiment resistance x is connected in the right gap. When R 1 and R 2 are connected in the left gap separately the balance points are 40 c m and 50 c m respecti

NTA Abhyas JEE Main 2020 Solution View → 84

A standard cell of 1.08 V is balanced by the potential difference across 90 c m of a 1 meter, long wire supplied by a cell of emf 2 V through a series resistor of resistance 2 Ω .

NTA Abhyas JEE Main 2020 Solution View → 85

Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively and resistance 8 Ω each. They are connected in parallel with a cell of emf 4 V and negligibl

NTA Abhyas JEE Main 2020 Solution View → 86

Let the end error on the LHS and RHS be equal to 1 cm. For the balance point at O, find out the % error in the value of X? (If the end error is 1 cm from both sides then it means t

NTA Abhyas JEE Main 2020 Solution View → 87

If a tuning fork of frequency ( f 0 ) 340 Hz and tolerance ± 1 % is used in the resonance column method for determining the speed of sound. If the first and the second resonance ar

NTA Abhyas JEE Main 2020 Solution View → 88

In an experiment on measurements of emf of a cell by a potentiometer, the balancing length for a cell of emf E and internal resistance r is found to be l . Now if another cell of e

NTA Abhyas JEE Main 2020 Solution View → 89

A galvanometer of resistance 50 Ω is connected to a battery of 3 V along with a resistance of 2950 Ω in series. A full-scale deflection of 30 divisions is obtained in the galvanome

NTA Abhyas JEE Main 2020 Solution View → 90

In a vernier callipers if each centimetre of the main scale is divided into q equal parts and p vernier scale divisions coincide with p - 1 main scale divisions, then what will be

NTA Abhyas JEE Main 2020 Solution View → 91

In a meter bridge experiment, resistances are connected as shown in figure. The balancing length l 1 = 55 c m . Now, an unknown resistance x is connected in series with P and the n

NTA Abhyas JEE Main 2020 Solution View → 92

A tunning fork of frequency 480 H z is used in an experiment for measuring speed of sound v in air by resonance tube method. Resonance is observed to occur at two successive length

JEE Main 2019 Solution View → 93

In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure. S. No. R Ω l c m 1. 2. 3. 4. 1000 100 10 1 60 13 1.5 1.0 Which o

JEE Main 2019 Solution View → 94

A load of mass M k g is suspended from a steel wire of length 2 m and radius 1.0 m m in Searle's apparatus experiment. The increase in length produced in the wire is 4.0 m m .

JEE Main 2019 Solution View → 95

The least count of the main scale of a screw gauge is 1 mm . The minimum number of divisions on its circular scale required to measure 5 μm diameter of a wire is:

JEE Main 2019 Solution View → 96

In a meter bridge, the wire of length 1 m has a non-uniform cross-section such that, the variation d R d l of its resistance R with length l is d R d l ∝ 1 l . Two equal resi

JEE Main 2019 Solution View → 97

In the experimental set up of metre bridge shown in the figure, the null point is obtaine data distance of 40 ~cm from A. If a 10 resistor is connected in series with R ₁, the null

JEE Main 2019 Solution View → 98

The resistance of the meter bridge AB in given figure is 4 . With a cell of emf =0.5 ~V and rheostat resistance R _ h =2 the null point is obtained at some point J. When the cell i

JEE Main 2019 Solution View → 99

A potentiometer wire AB having length L and resistance 12 r is joined to a cell D of emf ε and internal resistance r . A cell C having EMF ε / 2 and internal resistance 3

JEE Main 2019 Solution View → 100

The pitch and the number of divisions, on the circular scale, for a given screw gauge are 0 . 5 mm and 100 respectively. When the screw gauge is fully tightened without any object,

JEE Main 2019 Solution View → 101

In a screw gauge, 5 complete rotations of the screw cause it to move a linear distance of 0.25 cm . There are 100 circular scale divisions. The thickness of a wire measured by this

JEE Main 2018 Solution View → 102

In a screw gauge, 5 complete rotations of the screw cause it to move a linear distance of 0 . 25 cm . There are 100 circular scale divisions. The thickness of a wire measured by th

JEE Main 2018 Solution View → 103

There are two vernier calipers both of which have 1 cm divided into 10 equal divisions on the main scale. The Vernier scale of one of the calipers C 1 has 10 equal divisions that c

JEE Advanced 2016 Solution View → 104

A screw gauge with a pitch of 0.5 mm and a circular scale with 50 divisions is used to measure the thickness of a thin sheet of aluminium. Before starting the measurement, it is fo

JEE Main 2016 Solution View → 105

Consider a Vernier callipers in which each 1 cm on the main scale is divided into 8 equal divisions and a screw gauge with 100 divisions on its circular scale. In the Vernier calli

JEE Advanced 2015 Solution View → 106

Diameter of a steel ball is measured using a Vernier calipers which has divisions of 0.1 cm on its main scale (MS) and 10 divisions of its Vernier scale (VS) match 9 divisions on t

JEE Main 2015 Solution View → 107

During an experiment with a metre bridge, the galvanometer shows a null point when the jockey is pressed at 40 . 0 cm using a standard resistance of 90 Ω ,as shown in the figure. T

JEE Advanced 2014 Solution View → 108

During Searle's experiment, zero of the Vernier scale lies between 3.20 × 10 - 2   m and 3.25 × 10 - 2   m of the main scale. The 20 t h division of the Ver

JEE Advanced 2014 Solution View → 109

In an experiment to determine the gravitational acceleration g of a place with the help of a simple pendulum, the measured time period squared is plotted against the string length

JEE Main 2014 Solution View → 110

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it ?

JEE Main 2014 Solution View → 111

The diameter of a cylinder is measured using a vernier calipers with no zero error. It is found that the zero of the vernier scale lies between 5 . 10 cm and 5 . 15 cm of the main

JEE Advanced 2013 Solution View → 112

Correct set up to verify Ohm's law is :

JEE Main 2013 Solution View → 113

N divisions on the main scale of a vernier calliper coincide with (N+1) divisions of the vernier scale. If each division of main scale is ' a ' units, then the least count of the i

JEE Main 2012 Solution View → 114

A spectrometer gives the following reading when used to measure the angle of a prism. Main scale reading: 58.5 degree Vernier scale reading : 09 divisions Given that 1 division on

JEE Main 2012 Solution View → 115

A screw gauge gives the following reading when used to measure the diameter of a wire. Main scale reading : 0 ~mm Circular scale reading : 52 divisions Given that 1 ~mm on main sca

JEE Main 2011 Solution View → 116

A vernier calipers has 1 ~mm marks on the main scale. It has 20 equal divisions on the vernier scale which match with 16 main scale divisions. For this vernier calipers, the least

JEE Advanced 2010 Solution View → 117

In an experiment the angles are required to be measured using an instrument. 29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale. If the smal

JEE Main 2009 Solution View → 118

Column I gives a list of possible set of parameters measured in some experiments. The variations of the parameters in the form of graphs are shown in Column II. Match the set of pa

JEE Advanced 2008 Solution View → 119

Students I, II and III perform an experiment for measuring the acceleration due to gravity (g) using a simple pendulum. They use different lengths of the pendulum and/or record tim

JEE Advanced 2008 Solution View → 120

Shown in the figure below is a meter-bridge set up with null deflection in the galvanometer. The value of the unknown resistor R is

JEE Main 2008 Solution View →
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