science
Grade-7
Easy
Question
A coin lies at the bottom of the tumbler with water. However, its position appears to be raised because ___.
- The light coming from the coin kept in water bends on entering air.
- The light coming from the coin enters straight away into the eyes
- The light coming from the coin kept in water does not bend on entering air
- None of the above
Hint:
Refraction of light
The correct answer is: The light coming from the coin kept in water bends on entering air.
- Due to refraction of light, the ray of light from the coin travels from a denser medium to a rarer medium.
- In this process it bends away from the normal .
- The point from which the refracted rays appear to come gives the apparent position of the coin.
- So, the correct option is a.
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