Advertisements
Advertisements
Question
A pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water. Will the pencil appear to be bent to the same extent, if instead of water we use liquids like, kerosene or turpentine. Support your answer with reason.
Solution
The pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water due to the refraction of light. The refractive index of different mediums is different. The refractive index of kerosene and turpentine is more than the water, due to this the pencil will appear to bend more in case of kerosene or turpentine than that in case of water.
Therefore the pencil will not appear to be bent to the same extent, if instead of water we use liquids like, kerosene or turpentine.
APPEARS IN
RELATED QUESTIONS
Fill in the following blank with suitable word:
Light bends when is passes from water into air. We say that it is ............
Light travels more quickly through water than through glass.
If a ray of light passes from glass into water, which way will it bend : towards the normal or away from the normal?
With the help of a diagram, show how when light falls obliquely on the side of a rectangular glass slab, the emergent ray is parallel to the incident ray.
The depth of a pond when seen from above appears to be less.
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.
State whether true or false. If false, correct the statement.
The angle of deviation depends on the refractive index of the glass.
The bending of light as it passes from one medium to another is called ______.
Light is refracted or bent while going from one medium to another because of its ______ changes.
When a ray of light travels normal to the given surface, then the angle of refraction is ______.
