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Question
Fill in the blanks to complete the following sentence
When light travels from a denser to a rarer medium, its speed ……………….
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Solution
When light travels from a denser to a rarer medium, its speed increases
RELATED QUESTIONS
When rays of light are incident on a glass slab then the incident ray and emergent ray are _________ each other.
- perpendicular
- parallel
- opposite
- concurrent
After tracing the path of a ray of light passing through a rectangular glass slab for four different values of the angle of incidence, a student reported his observations in tabular form as given below:
| S.No | ∠ i | ∠ r | ∠ e |
| I | 30° | 19° | 29° |
| II | 40° | 28° | 40° |
| III | 50° | 36° | 50° |
| IV | 60° | 40° | 59° |
The best observation is
(A) I
(B) II
(C) III
(D) IV
State the dependence of angle of deviation On the refractive index of the material of the prism.
Draw the diagram of refraction of light in the glass slab
Why is the ratio of the velocities of light of wavelengths 4000Å and 8000Å in vacuum 1: 1?
What is the refractive index of vacuum
The refractive index of air with respect to glass is defined: as gµa = sin i/sin r
Write down a similar expression for aµg in terms of angle i and r.
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.
Observe the figure and name the ray AB, ray CD, ray GH.
