A light ray is refracting from air to an optically denser medium. If the refractive index of the given medium is increased, the angle of refraction will

[0.8 mark]

also increase

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decrease

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stay the same

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cannot be said

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Solution

The correct option is B decrease
Light going from an optically rarer to an optically denser medium bends towards the normal.

A higher refractive index will bend the light more towards the normal, making the angle of refraction smaller.

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Similar questions

Q. When a ray of light travels from an optically more denser medium to an optically less denser medium, the angle of incidence is always .......... than the angle of refraction.

Consider a light ray travelling from a denser medium to air. The refractive index of the medium is $\sqrt{3}$ . Calculate the angle of incidence, such that if it is further increased, total internal reflection will occur at the denser medium.

Q. Draw a labelled ray diagram to show how a ray of light is refracted when it passes:

(a) from air into an optically denser medium.
(b) from an optically denser medium into air.

Q. A light ray refracted from air to a denser medium. The angle of incidence is 60° and the angle of refraction is 30°. If the speed of light in air is

3 \times 10^{8} m / s

, find the speed of light in the denser medium.

[2 marks]

Q. A ray of light is incident from one medium

(μ = 1.5)

into another medium. If the angle of incidence and refraction are, respectively,

60

and

45

, then what will be the refractive index of the denser medium?

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A light ray is refracting from air to an optically denser medium. If the refractive index of the given medium is increased, the angle of refraction will [0.8 mark]

The correct option is B decreaseLight going from an optically rarer to an optically denser medium bends towards the normal. A higher refractive index will bend the light more towards the normal, making the angle of refraction smaller.

A light ray is refracting from air to an optically denser medium. If the refractive index of the given medium is increased, the angle of refraction will

[0.8 mark]

The correct option is B decrease
Light going from an optically rarer to an optically denser medium bends towards the normal.

A higher refractive index will bend the light more towards the normal, making the angle of refraction smaller.