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Ray Optics — BITSAT Physics PYQs

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

Ray Optics — BITSAT Physics PYQs

Power of biconvex lens is P diopter. When it is cut into two symmetrical halves by a plane containing the principal axis. The ratio of power of two halves is

The magnifying power of a telescope is 9 . When it is adjusted for parallel rays, the distance between the objective and eyepiece is 20 cm . The ratio of focal length of objective

In normal adjustment, for a refracting telescope, the distance between objective and eye piece is 30 cm . The focal length of the objective, when the angular magnification of the t

If the distance between object and its two times magnified virtual image produced by a curved mirror is 15 cm , the focal length of the mirror must be:

A thin prism P₁ with an angle 6^ and made of glass of refractive index 1.54 is combined with another prism P ₂ made from glass of refractive index 1.72 to produce dispersion withou

In a reflecting telescope, a secondary mirror is used to:

A mosquito O is sitting infront of a glass rod having spherical end of radius of curvature 40 ~cm . The image would be formed at

An achromatic convergent doublet of two lense in contact has a power of +5 D . The power of converging lens is +6 D . The ratio of the dispersive power of the convergent and diverg

Green light of wavelength 5460 Å is incident on an airglass interface. If the refractive index of glass is 1.5 , the wavelength of light in glass would be ( c =3 10⁸ ~ms ⁻¹ )

A vessel of depth 2 ~d ~cm is half filled with a liquid of refractive index ₁ and the upper half with a liquid of refractive index ₂ . The apparent depth of the vessel seen perpend

A convex lens of focal length 25 cm produces images of the same magnification 2 , when an object is kept at two positions x 1 and x 2 x 1 &#62; x 2 from the lens. The ratio of x 2

In the shown situation, if middle portion of the lens is painted black, then

A convex lens shown in the figure is made up of two types of transparent materials. A point sources of light is placed on its principal axis. If reflections from the boundaries bet

A planoconvex lens has thickness of 4 cm . When placed on a horizontal table, with the curved surface in contact with it, the apparent depth of the bottom most point of the lens is

The focal length of a thin convex lens for red and blue rays are 100 cm and 96 . 8 cm respectively. Then, the dispersive power of the material of the lens is

A plano-convex lens fits exactly into a plano-concave lens. Their plane surfaces are parallel to each other. If lenses are made of different materials of refractive indices &#956;

A biconvex lens has a radius of curvature of magnitude 20 ~cm . Which one of the following options best describe the image formed of an object of height 2 ~cm placed 30 ~cm from th

A ray of light of intensity I is incident on a parallel glass slab at point A as shown in diagram. It undergoes partial reflection and refraction. At each reflection, 25 % of incid

For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive index:

A lens having focal length f and aperture of diameter d forms an image of intensity I . Aperture of diameter d 2 in central region of lens is covered by a black paper. Focal length

A ray parallel to principal axis is incident at 30^ from normal on concave mirror having radius of curvature R . The point on principal axis where rays are focussed is Q such that

A planoconvex lens fits exactly into a planoconcave lens. Their plane surface are parallel to each other. If the lenses are made of different materials of refractive indices ₁ & ₂

Resolving power of the telescope will be more, if the diameter of the objective is

The magnifying power of a telescope is 9 . When it is adjusted for parallel rays, the distance between the objective and the eye piece is found to be 20 ~cm . The focal length of l

When light is refracted, which of the following does not change ?

The given lens is broken into four parts and rearranged as shown. If the initial focal length is f then after rearrangement the equivalent focal length is-

A ray of light is incident at the glass-water interface at an angle i, it emerges finally parallel to the surface of water, then the value of _ g would be

A thin convergent glass lens ( _ g =1.5 ) has a power of +5.0 D . When this lens is immersed in a liquid of refractive index , it acts as a divergent lens of focal length 100 ~cm .

A vessel of depth 2 ~d ~cm . is halffilled with a liquid of refractive index ₁ and the upper half with a liquid of refractive index ₂ . The apparent depth of the vessel seen perpen

The diameter of the objective of a telescope is a, its magnifying power is m and wavelength of light is , The resolving power of the telescope is:

A plano-convex lens of focal length 30 ~cm has its plane surface silvered An object is placed 40 ~cm from the lens on the convex side. The distance of the image from the lens is

A convex lens of focal length 25 cm produces images of the same magnification 2 , when an object is kept at two positions x 1 and x 2 x 1 > x 2 from the lens. The ratio of x 2

A plano-convex lens fits exactly into a plano-concave lens. Their plane surfaces are parallel to each other. If lenses are made of different materials of refractive indices μ