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Question
Name the phenomenon due to which a swimming pool appears less deep than it really is.
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Solution
This is due to the refraction of light.
RELATED QUESTIONS
| Column I | Column II | Column III | |
| 1 | Dispersion | Long-sightedness | Twinkling of stars |
| 2 | Refraction | Splitting of white light into component colours | Convex lens |
| 3 | Hypermetropia | Change in the direction of the ray of light due to change in medium | Spectrum of seven colours |
The figure given alongside shows the image of a clock as seen in a plane mirror. The correct time is:
If a ray of light goes from a rarer medium to a denser medium, will it bend towards the normal or away from it?
State whether the following statement is true or false:
Refraction occurs because light slows down in denser materials.
A vertical ray of light strikes the horizontal surface of some water:
- What is the angle of incidence?
- What is the angle of refraction?
How does the light have to enter the glass:
to produce a large amount of bending?
Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 108 m s−1.
Explain how the formation of a rainbow occurs.
The speed of light varies in different media.
Write scientific reason.
The sun appears on the western horizon for some time after sunset.
