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प्रश्न
When light travels from a rarer to a denser medium, its speed ______.
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उत्तर
When light travels from a rarer to a denser medium, its speed decreases.
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संबंधित प्रश्न
State the dependence of angle of deviation On the refractive index of the material of the prism.
Write the relation between the angle of incidence and the angle of refraction for a medium.
A coin is places at the bottom of a beaker containing water (refractive index = 4/3) to a depth of 12 cm. By what height the coin appears to be raised when seen from vertically above?
A ray of light OP passes through a right angles prism as shown in the adjacent diagram.
(a) State the angles of incidence at the faces AC and BC.
(b) Name the phenomenon which the ray suffers at the face AC.
A ray of light falls normally on the surface of a transparent glass slab. Draw a ray diagram to show its path and also mark angle of incidence and angle of emergence.
Rahim recorded the following sets of observations while tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence.
|
S. No. |
Angle of incidence |
Angle of refraction |
Angle of emergence |
|
I |
45° |
41° |
45° |
|
II |
40° |
38° |
38° |
|
III |
45° |
41° |
40° |
|
IV |
41° |
45° |
41° |
The correct observation is recorded at serial number:
(1) I
(2) II
(3) III
(4) IV
In an experiment of finding the refractive index of glass, if blue light is replaced by the red light, how will the refractive index of glass change? Give reason in support of your answer.
Name the phenomenon responsible in the following case:
Apparent bending of a stick in water
You are provided with a printed piece of paper. Using this paper how will you differentiate between a convex lens and a concave lens?
