science
Grade-7
Easy
Question
A coin is lying at the bottom of a tumbler filled with water. How many mediums does the light from the coin go through to reach the eyes of the observer?
- 4
- 3
- 2
- 1
Hint:
Denser and rarer medium
The correct answer is: 2
- The light rays coming from the coin goes through refraction as it moves from a denser medium (water) to rarer medium(air).
- Light rays travel 2 medium.
- And then we see the apparent position of coin.
- So, the correct option is c.
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