Advertisements
Advertisements
Question
What is meant by the refraction of light?
Advertisements
Solution
It is a phenomenon in which a ray of light deviates from its original path while travelling from one optical medium to another optical medium.
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
Select from the following the best experimental setup for tracing the path of a ray of light passing through a rectangular glass slab.
(a) P
(b) Q
(c) R
(d) S
Draw diagrams to show the refraction of light from
- air to glass, and
- glass to air. In each diagram, label the incident ray, refracted ray, the angle of incidence
- and the angle of refraction (r).
Name the colour of white light which is deviated the most on passing through a prism.
Which of the following is the best experimental set-up out of the four shown for tracing the path of a ray of light passing through a rectangular glass slab ?
Name the phenomenon responsible in the following case:
Twinkling of stars
A fish swimming in a pond seems nearer than it really is. Explain.
What should be the ratio of the speed of light through the liquid to the speed through the glass so that there is no refraction of light at the boundaries of the glass block when the system is illuminated by the light of one colour?
Calculate the velocity of light in a glass block of refractive index 1.5. (Velocity of light in air = 3 × 108 m/s)
