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Question
What is the refractive index of vacuum
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Solution
Unity
RELATED QUESTIONS
What is a spectrum?
In your laboratory you trace the path of light rays through a glass slab for different values of angle of incidence (∠i) and in each case measure the values of the corresponding angle of refraction (∠r) and angle of emergence (∠e). On the basis of your observations your correct conclusion is:
(a) ∠i is more than ∠r, but nearly equal to ∠e
(b) ∠i is less then ∠r, but nearly equal to ∠e
(c) ∠i is more than ∠e, but nearly equal to ∠r
(d) ∠i is less than ∠e, but nearly equal to ∠r
Name one factor that affects the lateral displacement of light as it passes through a rectangular glass slab.
Name a prism required for obtaining a spectrum of Ultraviolet light.
Select from the following the best experimental set-up for tracing the path of a ray of light through a glass slab:
(A) I
(B) II
(C) III
(D) IV
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.
Draw a ray diagram showing the lateral displacement of a ray of light when it passes through a parallel sided glass slab.
The critical angle for glass-air interface is :
How does the angle of deviation produced by a prism depend on the angle of incidence of light at the prism surface? Draw a graph to illustrate your answer.
