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Ray Optics — JEE Main & Advanced NSEP PYQs

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

48 questionsNSEPSolutions on every page
1

Consider a manual camera with a lens having a focal length of 5 cm . It is focused at infinity. For catching the picture of an object at a distance of 30 cm , one would

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A point source of light is viewed through a plate of glass of thickness t and of refractive index 1.5. The source appears

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A small fish, 4 cm below the surface of a lake, is viewed through a thin converging lens of focal length 30 cm held 2 cm above the water surface. Refractive index of water is 1.33

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Two identical lenses made of the same material of refractive index 1.5 have the focal length 12 cm . These lenses are kept in contact and immersed in a liquid of refractive index 1

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In case of real images formed by a thin convex lens, the linear magnification is (I) directly proportional to the image distance, (II) inversely proportional to the object distance

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A horizontal ray of light passes through a prism of refractive index 1.5 and apex angle 4^ and then strikes a vertical plane mirror placed to the right of the prism. If after refle

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When observed from the earth the angular diameter of the sun is 0.5 degree. The diameter of the image of the sun when formed in a concave mirror of focal length 0.5 m will be about

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An object 1 cm long lies along the principal axis of a convex lens of focal length 15 cm , the centre of the object being at a distance of 20 cm from the lens. Therefore, the size

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Rays from an object immersed in water ( =1.33 ) traverse a spherical air bubble of radius R . If the object is located far away from the bubble, its image as seen by the observer l

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A ray is incident on a refracting surface of RI at an angle of incidence i and the corresponding angle of refraction is r . The deviation of the ray after refraction is given by =i

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A convex lens and a concave lens are kept in contact and the combination is used for the formation of image of a body by keeping it at different places on the principal axis. The i

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An air bubble is situated at a distance 2.0 cm from the centre of a spherical glass paperweight of radius 5.0 cm and refractive index 1.5. The bubble is seen through the nearest su

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A cylinder containing water (refractive index 4/3) is covered by an equiconvex glass (refractive index 3 / 2 ) lens of focal length 25 cm . At the mid-day when the sun is just over

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A student uses a convex lens to determine the width of a slit. For this he fixes the positions of the object and the screen and moves the lens to get a real image on the screen. Th

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The critical angle for light passing from glass to air is minimum for the light of wavelength

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A concave lens of focal length f produces an image (1 / n) times the size of the object. The distance of the object from the lens is

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The aperture diameter of a plano-convex lens is 6 cm and its thickness is 3 mm . If the speed of light through its material is v=2 10^8 ~m / s , the focal length of the lens is

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A rectangular metal tank filled with a certain liquid is as shown in the figure. The observer, whose eye is in level with the top of the tank, can just see the corner E of the tank

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A thin hollow equiconvex lens, silvered at the back, converges a beam of light parallel to the principal axis at a distance 0.2 m . When filled with water ( = 4 3 ) , the same beam

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A converging beam of light is pointing to P . Two observations are made with (i) a convex lens of focal length 20 cm and,(ii) a concave lens of focal length 16 cm placed in the pat

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A concave mirror has a radius of curvature R and forms the image of an object placed at a distance 1.5 R from the pole of the mirror. An opaque disc of diameter half the aperture o

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A ray of white light is made incident on the refracting surface of a prism such that after refraction at this surface, the green component falls on the second surface at its critic

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Arectangular slab of glass of refractive index 1.5 is immersed in water of refractive index 1.33 such that the top surface of the slab remains parallel to water level. Light from a

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In a compound microscope, having tube-length 30 cm , the power of the objective and the eye-piece are 100 D and 10 D respectively. Then the magnification produced by the microscope

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Parallel rays are incident on a glass sphere of diameter 10 cm and having refractive index 1.5 . The sphere converges these rays at a certain point. The distance of this point from

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A pin of small length ' a ' is placed along the axis of a concave mirror of focal length f , at the distance u (> f ) from its pole. The length of its image is ' b '. If the same o

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A thin rod of length 10 cm . is placed along the axis of a concave mirror of focal length 30 cm in such a way that one end of the image coincides with one end of the object. The le

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The critical angle between a certain transparent medium and air is . A ray of light travelling through air enters the medium at an angle of incidence equal to its polarizing angle

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A cylinder of length >1 ~m filled with water ( = 4 3 ) up to the brim, kept on a horizontal table is covered at its top by an equiconvex glass ( =1.5 ) lens of focal length 25 cm w

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The optical powers of the objective and the eyepiece of a compound microscope are 100 D and 20 D respectively. The microscope magnification being equal to 50 when the final image i

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A ray of light is incident on an equilateral prism made of flint glass (refractive index 1.6) placed in air.

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The following figure shows the section ABC of an equilateral triangular prism. A ray of light enters the prism along LM and emerges along QD. If the refractive index of the materia

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A convex lens is held 45 cm above the bottom of an empty tank. The image of a point object at bottom of tank is formed 36 cm above the lens. Now a liquid is poured into the tank up

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A point source S of light is placed at a depth d below the surface of water in a large and deep lake. Fraction of light that escapes in space above directly from water (refractive

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A concave lens of focal length 10 cm is placed between two convex lenses of focal length 10 cm and 20 cm at a separation of 5 cm between the first and second lens and 10 cm between

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On a right angled transparent triangular prism ABC , when a ray of light is incident on face AB , parallel to the hypotenuse BC , it emerges out of the prism grazing along the surf

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A thin double convex lens of radii of curvature R₁=20 ~cm and R₂=60 ~cm is made-up of a transparent material of refractive index =1.5 . Choose the correct option(s)

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A converging lens of focal length 40 cm is fixed at 40 cm in front of a screen. An object placed 120 cm from the fixed lens is required to be focused on the screen by introducing a

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A concave mirror when placed in air has a focal length f=20 ~cm . The mirror is now placed horizontally and filled with a thin layer of water having refractive index 4 3 . The obje

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A transparent cylindrical rod of length l=50 ~cm , radius R=10 ~cm and refractive index = 3 lies onto a horizontal plane surface. A ray of light moving perpendicular to its length

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Numerical aperture of an optical fibre is a measure of

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A direct vision spectroscope has been designed to obtain dispersion without deviation by arranging alternate inverted thin prisms of crown glass (refractive index ₁= 2 ) and flint

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Light emerges out uniformly from a point source placed at the focus of a concave mirror to give out a spherical wave front. As a result of reflection of the paraxial rays from the

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While performing an experiment for determining the focal length of a concave mirror by u-v method, a student recorded the given sets of the positions (in cm) of the object and the

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There are four layers of glass plates, placed on top of each other such that bottom one has thickness a ₁ and refractive index n ₁=2.7 . Next one has thickness a ₂ and refractive i

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An equi-convex lens of focal length ' f ' is cut along a diameter, in two halves (pieces). The two identical pieces of the lens are now arranged as shown in the figure on a common

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A parallel beam of light is made incident (as shown) on the flat diametric plane of a transparent semi-circular thin sheet of thickness t(t R) of refractive index = 2 at an angle o

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An equi-concave lens of radii of curvature of the two surfaces numerically equal to 7 cm and refractive index =1.5 has a small silver dot on the rear surface. As a result of this,

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