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प्रश्न
Define the term refractive index of a medium in terms of velocity of light.
उत्तर
It is defined as the ratio of the velocity of light in medium 1 to the velocity of light in medium 2.
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संबंधित प्रश्न
Explain the term absolute refractive index of a medium and write an expression to relate it with the speed of light in vacuum.
Draw a ray diagram to show the refraction of a monochromatic ray through a prism when it suffers minimum deviation
After tracing the path of rays of light through a glass slab for three different angles of incidence, a student measured the corresponding values angle of refraction r and angle of emergence e and recorded them in the table given below:
|
S. No. |
∠i |
∠i |
∠e |
|
I |
30° |
20° |
31° |
|
II |
40° |
25° |
40° |
|
III |
50° |
31° |
49° |
The correct observations are:
(A) I and II
(B) II and III
(C) I and III
(D) I, II and III
Which of the following has the highest refractive index:
A total reflecting equilateral prism can be used to deviate a ray of light through:
Rewrite the following statement by selecting the correct option:
If a ray of light strikes a glass slab at an angle of 600 with the surface of the slab, the angle of incidence must be __________________.
A ray of light moves from a rare medium to a dense medium as shown in the diagram below. Write down the number of the ray which represents the partially reflected ray.
Draw ray of light bending towards the normal while passing from glass to water. Label your diagrams.
The speed of light in air is 3 × 108 ms-1. Calculate the speed of light in water. The refractive index of water is 4/3.
