Physics
Explain the following:
A coin placed at the bottom of a vessel appears to be raised when water is poured in the vessel.
Reflection of Light
17 Likes
Answer
The below ray diagram shows why a coin appears raised when placed in a vessel filled with water:
When water is poured in the vessel, the ray of light from point A of the coin, travelling in a straight line changes its direction (i.e. it bends) at the surface of water and reaches the eye. The ray now appears to come from point B instead of point A to our eye. So, the coin appears to be raised from position A to position B.
Answered By
13 Likes
Related Questions
Explain the following:
The sun is seen before the sunrise and after the sunset.
The diagram in the Fig. 5.39 shows a ray of light AO falling on a rectangular glass slab PQRS. Complete the diagram till the ray of light emerges out of the slab. Label on the diagram the incident ray, the refracted ray and the emergent ray.
Draw a diagram showing the refraction of a light ray from water to glass. Label on it the incident ray, the angle of incidence (i), and the angle of refraction (r).
Explain the following:
A straight stick partly dipped in water obliquely, appears to be bent at the surface of water.