bow much water should be filled in a container 21 cm in height so that if it appears half filled when viewed from top of the container
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Explanation:
Given how much water should be filled in a container 21 cm in height so that if it appears half filled when viewed from top of the container
- Let h be the height of water filled in container.
- We know that height of container is 21 cm, so apparent height of water viewed from
- top will be 21 – x
- Refractive index of the medium = real height / apparent height
- We know that refractive index = 4/3
- Real height = h
- Apparent height = 21 – h
- So 4/3 = h / 21 – h
- 4(21 – h) = 3 h
- 84 - 4h = 3 h
- 7 h = 84
- H = 84 / 7
- H = 12 cm
- So the height of water filled in container = 12 cm
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