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Heat and Temperature — JEE Main & Advanced Physics PYQs

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

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1

The steam point and the ice point of a mercury thermometer are marked as 80^ and 20^ , respectively. What will be the temperature on the centigrade scale when this thermometer read

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A gas thermometer determines temperature from the variation of pressure of a gas sample. If the pressure recorded at the melting point of lead is 2.20 times the pressure recorded a

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In a constant volume gas thermometer, the gas pressures are measured to be 80 cm , 90 cm , and 100 cm of mercury at the ice point, the steam point, and within a heated wax bath, re

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At the triple point of water, a constant volume gas thermometer measures a pressure of 40 kPa . Determine the pressure measured at the boiling point of water ( 100^ C ).

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A platinum resistance thermometer registers 0^ at a resistance of 80 and 100^ at a resistance of 90 . Determine the temperature on the platinum scale when the resistance reaches 86

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At the ice point ( 0^ C ), the steam point ( 100^ C ), and the zinc point ( 420^ C ), a resistance thermometer reads R = 20.0 , 27.5 , and 50.0 respectively. Given that the resista

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On a winter night when the temperature is 0^ C , a concrete slab has a length of 10 m . Determine the length of the slab on a summer day when the temperature reaches 35^ C . The co

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At 0^ C , a circular hole of diameter 2.00 cm is made in an aluminium plate. Determine its diameter at 100^ C . Given for aluminium = 2.3 10⁻⁵ ^ C ⁻¹ .

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A steel metre scale is calibrated to provide correct readings at 20^ C . Determine the distance between the 50 cm mark and the 51 cm mark when the scale is used at 10^ C . The coef

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Two metre scales, one made of steel and the other of aluminium, agree at 20^ C . Determine the ratio aluminium-centimetre/steel-centimetre at 0^ C . The coefficient of linear expan

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A steel metre scale and an aluminium metre scale are calibrated to agree exactly at 20^ C . Calculate the ratio aluminium-centimetre/steel-centimetre at 100^ C . The value of for s

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A steel metre scale reads the correct length at 16^ C . Determine the percentage error if this scale is utilised on a summer day when the temperature is 46^ C . The coefficient of

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A metre scale made of steel gives accurate readings at 20^ C . A sensitive experiment demands distance measurements to be accurate up to 0.055 mm in 1 m . Determine the temperature

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At 0^ C , the density of water is 0.998 g cm ⁻³ , while at 4^ C it is 1.000 g cm ⁻³ . Determine the average coefficient of volume expansion of water over the temperature range of 0

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Determine the ratio of the lengths of an iron rod and an aluminium rod such that the difference in their lengths remains independent of temperature. The coefficients of linear expa

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A pendulum clock, comprising a light steel rod attached to a heavy ball, indicates the correct time at 20^ C in a location where g = 9.800 m s ⁻² . If the clock is moved to a new l

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A constant volume thermometer indicates a pressure of 1.500 10⁴ Pa at the triple point of water, while at the normal boiling point it indicates 2.050 10⁴ Pa . Determine the tempera

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In a constant volume gas thermometer, the pressure of the gas is 70 kPa at the ice point. Determine the pressure at the steam point.

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The bulb of a Callender's compensated constant pressure air thermometer has a volume of 1800 cc . When this bulb is immersed in a vessel, 200 cc of mercury must be poured out. Dete

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A steel metre scale measures the correct length at 16^ C . Evaluate the percentage error if this scale is employed on a winter day when the temperature is 6^ C . The coefficient of

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A horizontal aluminium plate has a hole with a diameter of 2.000 cm . A steel sphere having a diameter of 2.005 cm rests on this hole. These lengths are measured at an initial temp

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A glass window is to be installed in an aluminium frame. On the working day, the temperature is 40^ C and the glass window measures exactly 20 cm 30 cm . Determine the required siz

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A glass vessel has a volume of 1000 cc at 20^ C . Determine the volume of mercury that must be poured into the vessel at this temperature to ensure that the volume of the remaining

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At 0^ C , a glass vessel has exact dimensions of 10 cm 10 cm 10 cm . At this temperature, the vessel is completely filled with mercury. Upon raising the temperature to 10^ C , 1.6

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At 0^ C , the densities of wood and benzene are 880 kg m ⁻³ and 900 kg m ⁻³ , respectively. The coefficients of volume expansion for wood and benzene are 1.2 10⁻³ ^ C ⁻¹ and 1.5 10

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Resting on a fixed horizontal base, a steel rod is clamped at both of its ends. At 20^ C , the rod is in an unstrained state. Determine the longitudinal strain developed in the rod

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An iron railway track is installed in winter at an average temperature of 18^ C . The track is made up of 12.0 m sections placed consecutively. What gap must be provided between tw

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A steel wire with a cross-sectional area of 0.5 mm ^2 is secured between two fixed supports. The wire is just taut at 20^ C . Calculate the tension in the wire when the temperature

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A steel rod is clamped rigidly at both ends. At 20^ C , the rod experiences zero tension. If the temperature increases to 100^ C , determine the force exerted by the rod on one of

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An aluminium rod and two steel rods, all having an identical length l₀ and equal cross-sectional areas, are rigidly joined at their ends as shown in the figure. At 0^ C , all the r

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While maintaining a constant volume, a steel ball initially at a pressure of 1.0 10⁵ Pa is heated from 20^ C to 120^ C . Determine the pressure inside the ball. The coefficient of

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Two metre scales, one of steel and the other of aluminium, have exactly the same readings at 20^ C . Find the ratio aluminium-centimetre/steel-centimetre at 40^ C . Given that for

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An iron circular disc is rotated about its axis with a constant angular velocity . Determine the percentage change in the linear speed of a particle on the rim when the disc is gra

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A solid body of any shape possesses a moment of inertia I₀ at 0^ C . If represents the coefficient of linear expansion of the solid, determine the expression for its moment of iner

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A cylindrical aluminium can holds 500 cm ^3 of water, with the can's inner cross-sectional area being 125 cm ^2 . All these measurements are taken at 10^ C . Determine the rise in

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A steel rod of length 1 m is placed on a smooth horizontal base. When it is heated from 0^ C to 100^ C , what is the longitudinal strain developed?

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A torsional pendulum comprises a solid disc attached at its centre to a thin wire ( = 2.4 10⁻⁵ ^ C ⁻¹ ). Determine the percentage change in the time period between peak winter ( 5^

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Which of the following pairs of scales can yield identical numerical values for the temperature of a body?

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A bimetallic strip is created by rivetting together two identical rectangular strips, one of copper and one of steel ( _ copper > _ steel ). Upon heating, this bimetallic strip wil

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When filling a constant volume gas thermometer, the gas should be maintained at

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When a metal sheet containing a circular hole is heated, the hole

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Consider a system X that is neither in thermal equilibrium with system Y nor with system Z . The systems Y and Z

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Which curve in the given figure depicts the relationship between Celsius and Fahrenheit temperatures?

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When the temperature of a uniform rod is slightly raised by t , its moment of inertia I about an axis parallel to itself increases by

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The water temperature at the surface of a deep lake is 2^ C . What is the expected temperature at the bottom?

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An aluminium sphere is immersed in water at 10^ C . If the temperature is increased, the force of buoyancy

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Evaluate the following statements. (A) The dimension of the coefficient of linear expansion is K⁻¹ . (B) The dimension of the coefficient of volume expansion is K⁻¹ .

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If the temperature of a uniform rod is slightly elevated by t , the increase in its moment of inertia I about a perpendicular bisector is

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A spinning wheel is brought into contact with an identical wheel spinning at an identical speed. The wheels slow down under the influence of friction. Which of the following energi

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A spinning wheel A is brought into contact with another wheel B that is initially at rest. Because of friction at the contact point, the second wheel also begins to spin. Which of

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A body A rests on a railway platform while an identical body B is inside a moving train. From the perspective of the ground, which of the following energies of B exceed those of A

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As the temperature rises, the time period of a pendulum

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For which of the following pairs of temperature scales is the size of a degree identical?

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For some time, a solid object is kept in water inside an adiabatic container. The temperature of the water decreases during this period, and there is no appreciable change in the s

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