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प्रश्न
Does the depth of a tank of water appear to change or remain the same when viewed normally from above?
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उत्तर
Depth of the tank remains the same when viewed normally from above.
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संबंधित प्रश्न
Define refraction and state the laws of refraction.
Explain how the formation of a rainbow occurs.
A student traces the path of a ray of light through a rectangular glass slab for the different values of angle of incidence. He observes all possible precautions at each step of the experiment. At the end of the experiment, on analyzing the measurements, which of the following conclusions is he likely to draw?
(A) ∠i = ∠e < ∠r
(B) ∠i < ∠e < ∠r
(C) ∠i > ∠e > ∠r
(D) ∠i = ∠e > ∠r
Draw the diagram given below and clearly show the path taken by the emergent ray.
Complete Fig. 4.32 to show the path of the ray of single colour as it enters the prism and emerges out of it. Mark the angles wherever necessary.
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.
What is the correct reason for blinking / flickering of stars? Explain it.
a) The blasts in the stars.
b) Absorption of star light by the atmosphere.
c) Motion of the stars.
d) Changing refractive index of gases in the atmosphere.
The critical angle for glass-air interface is :
Express the refractive index μ of a medium in terms of the velocity of light.
