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Question
When light travels from a rarer to a denser medium, its speed ______.
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Solution
When light travels from a rarer to a denser medium, its speed decreases.
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RELATED QUESTIONS
Choose the correct alternative and rewrite the following sentence.
A ray of light strikes the glass slab at an angle of 50°. What is the angle of incidence?
A student very cautiously traces the path of a ray through a glass slab for different values of the angle of incidence (∠i). He then measures the corresponding values of the angle of refraction (∠r) and the angle of emergence (∠e) for every value of the angle of incidence. On analysing these measurements of angles, his conclusion would be
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(B) ∠i = ∠e > ∠r
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(D) ∠i = ∠e < ∠r
A ray of light passes from water to air. How does the speed of light change?
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The refractive index of air with respect to glass is expressed as `""_g μ_a=sin i /sin r`.
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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.
While performing the experiment on tracing the path of a ray of light through a rectangular glass slab, in which of the following experimental set-ups is a student likely to get best results? P1 and P2 are the positions of pins fixed by him.
(A) I
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A fish swimming in a pond seems nearer than it really is. Explain.
