List of top Physics Questions on Refraction of Light

When a light ray is incident on a small angle prism of material of refractive index 1.5, the angle of minimum deviation is $7^\circ$. If the prism is immersed in a liquid of refractive index 1.2, then the angle of minimum deviation is:

A thin glass prism has refractive index \(1.5\). The correct relation between the angle of minimum deviation \((δm)\) and angle of refraction \((r)\) is

The prism has refracting angle A. The second refracting surface of the prism is silvered. Light ray falling on first refracting surface with angle of incidence \(2A\), reaches the second surface and returns back through same path due to reflection at the silvered surface. The refractive index of the material of prism is

Light travels a distance 'x' in time '\(t_0\)' in air and '\(4x\)' in time '\(t_1\)' in another denser medium. The critical angle for this medium is

A glass slab of thickness \(6.0\) cm is placed on the piece of paper on which an inkdot is marked. By how much distance would an inkdot appear to be raised? The velocity of light in glass is \(2\times 10^8\text{ ms}^{-1}\) and that in air is \(3\times 10^8\text{ ms}^{-1}\).

Refractive index of a glass convex lens is \(1.5\). The radius of curvature of each of the two surfaces of the lens is 40 cm. The ratio of the power of the lens when immersed in a liquid of refractive index \(1.25\) to that when placed in air is

A ray of light incident on one face of an equilateral glass prism having refractive index \(\sqrt{2}\), produces the emergent ray which just grazes along the adjacent face. The value of angle of incidence is \((sin90^{\circ} = 1)\)
\((sin30^{\circ} = \frac{1}{2})(sin45^{\circ} = \frac{1}{\sqrt{2}})\)

An unpolarised light of intensity \(64\text{ Wm}^{-2}\) passes through three polarizers successively such that the transmission axis of last polarizer is crossed with the first. The intensity of the emerging light is \(6\text{ Wm}^{-2}\). The angle between the transmission axis of the first two polarizers is

A lens of refractive index '\(μ\)' has focal length '\(f\)'. When the lens is immersed in a liquid of refractive index '\(μ_0\)', its focal length becomes '\(f_0\)'. Then '\(f_0\)' is given by

A convex lens having refractive index 1.6 has focal length 12 cm, when it is in air. The focal length of that lens when placed in water is (refractive index of water = 1.28)

A ray of light passes from the vacuum into a medium of refractive index 'n'. If the angle of incidence is twice the angle of refraction, then the angle of incidence in terms of refractive index is

The angle of minimum deviation produced by a thin prism in air is \(δ_1\). What will be the minimum deviation (\(δ_2\)) if the prism is immersed in liquid ?
\([^an_g = \frac{3}{2}, ^an_{\ell} = \frac{1}{3}]\)

In the phenomenon of refraction of light for the same angle of incidence

A ray of light travels from air to water to glass and again from glass to air. Refractive index of water with respect to air is 'x', glass with respect to water is 'y' and air with respect to glass is 'z'. Which one of the following is correct?

A thin prism in air produces the angle of minimum deviation \(δ\). If the prism is immersed in water, the angle of minimum deviation for the same ray is (refractive index of water is \(4/3\) and that of glass prism is \(3/2\))

A person uses a convex lens of focal length 20 cm in spectacles, the power of lens will be :

A few phenomena of light are given below :
(I) Advance sunrise and delayed sunset
(II) Twinkling of stars
(III) Wavering of objects seen through a turbulent stream of hot air
(IV) Blue colour of sky
Which of the above phenomena are due to atmospheric refraction?

When the object is placed very close to the lens, the image formed is virtual, erect and

When object moves closer to convex lens, the image formed by it shifts :

Match the positions of the object (Column A) with the corresponding positions of the image formed by a convex lens (Column B).

Large number of thin strips of black paper are made on the surface of a convex lens of focal length 20 cm to catch the image of a white horse. The image will be

The lens formula is given by :
\[\frac{1}{f} = \frac{1}{v} - \frac{1}{u}\]
Which of the following correctly identifies each term in the formula?

The Sun is visible to us about 2 minutes before the actual sunrise and about 2 minutes after the actual sunset because of

Consider the statements given below and choose the correct option :
Statement 1 : Angle of deviation produced by a prism depends on the angle of the prism.
Statement 2 : Dispersion takes place in a prism because the refractive index of the refracting medium is different for different wavelengths.