Advertisements
Advertisements
Question
When a ray of light from air enters a denser medium, it ______.
Options
Bends away from the normal
Bends towards the normal
Goes undeviated
Is reflected back
Advertisements
Solution
When a ray of light from air enters a denser medium, it bends towards the normal.
APPEARS IN
RELATED QUESTIONS
Which of the above wavelengths has a higher frequency?
How must light travel out of a substance if it is not going to be refracted?
In the adjacent diagram, AO is a ray of light incident on a rectangular glass slab.

- Complete the path of the ray till it emerges out of the slab.
- In the diagram, mark the angle of incidence (i) and the angle of refraction (r) at the first interface. How is the refractive index of glass related to the angles i and r?
- Mark angles of emergence by the letter e. How are the angles i and e related?
- Which two rays are parallel to each other? Name them.
- Indicate in the diagram the lateral displacement between the emergent ray and the incident ray. State one factor that affects the lateral displacement.
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.
A total reflecting equilateral prism can be used to deviate a ray of light through:
Glass is transparent in nature. Why does glass powder look opaque? When water is poured over it, it again becomes transparent. Why?
During sunset and sunrise, the sun is seen when it is slightly below the horizon. Give reason.
In the diagram below, PQ is a ray of light incident on a rectangular glass block.

How are the angles ‘i’ and ‘e’ related to each other?
What is lateral displacement?
