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प्रश्न
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उत्तर
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संबंधित प्रश्न
Explain how the formation of a rainbow occurs.
How is the refractive index of a medium related to the speed of light in it?
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
In the fig. name the ray which represents the correct path of light while passing through a glass block.
In the fig., PO is a ray of light incident on a rectangular glass block.
(a) Complete the path of the ray through the block.
(b) In the diagram, mark the angle of incidence (i) and the angle of refraction (r) at the first interface. How is the refractive index of glass related to the angles I and r?
(c) Mark angle of emergence by the letter e. How are the angles i and e related?
(d) Which two rays are parallel to each other? Name them.
(e) Indicate in the diagram the lateral displacement between the emergent ray and the incident ray.
Make the correct for each of the following :
With reference to the fig, the refractive index of the glass block is
A fish swimming in a pond seems nearer than it really is. Explain.
Complete the ray diagram showing its emergence into the air after passing through the prism.
The refractive index of glass with respect to air is 1.5. What is the value of the refractive index of air with respect to glass?
Which colour of white light travels fastest in any medium except air?
