Snell's law is that the ratio of the sine of the angle of incidence and refraction is constant. As in reflection, we measure the angles from the traditional to the surface, at the purpose of contact. The constants are the index of refraction for the corresponding media.

Self Study in Physics>Chapter 4 - Refraction at Plane Surfaces>TEST YOURSELF>Q 9

HARD

10th ICSE

IMPORTANT

Earn 100

What is meant by the statement the critical angle for diamond is $24^{0}$ ?

Important Questions on Refraction at Plane Surfaces

HARD

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 4 - Refraction at Plane Surfaces>TEST YOURSELF>Q 10

The critical angle for glass of which the equiangular prism

ABC

(shown in fig.)is made, is

60^{0}

. A ray of light incident on the side

AB

of the prism is refracted along

DE

such that the angle is made with the side

AC

is

150^{0}

. Also

∠ EDB = 90^{0}

. Draw the path of the incident ray on the side

AB

(which travels along

DE

) and also the path which the ray

DE

travels from the point

E

onwards.

HARD

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 4 - Refraction at Plane Surfaces>TEST YOURSELF>Q 11

A ray of light passes through a right-angled prism as shown in fig. State the angle of incidence at the faces

AC

and

BC

.

EASY

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IMPORTANT

Self Study in Physics>Chapter 4 - Refraction at Plane Surfaces>TEST YOURSELF>Q 12

State Snell's law.

MEDIUM

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IMPORTANT

Self Study in Physics>Chapter 4 - Refraction at Plane Surfaces>TEST YOURSELF>Q 13

Water in a pond appears to be only three quarters of actual depth. What property of light is responsible for this observation?

EASY

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 4 - Refraction at Plane Surfaces>TEST YOURSELF>Q 13

Water in a pond appears to be only three quarters of its actual depth. Illustrate your answer with the help of a ray diagram.

MEDIUM

10th ICSE

IMPORTANT

Self Study in Physics>Chapter 4 - Refraction at Plane Surfaces>TEST YOURSELF>Q 14

In the given diagram a source of light $S$ is placed at the bottom of a beaker containing water. Complete the diagram. (Critical angle for water to air is $48 °$ )

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