Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
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
संबंधित प्रश्न
Which property of light makes a pencil cast a shadow when it is held in front of a light source?
The image formed by a plane mirror is :
(a) virtual, behind the mirror and enlarged.
(b) virtual, behind the mirror and of the same size as the object.
(c) real, at the surface of the mirror and enlarged.
(d) real, behind the mirror and of the same size as the object.
As light rays pass from water into glass, are they refracted towards the normal or away from the normal?
In which material do you think light rays travel faster-glass or air?
What is meant by the 'angle of incidence' and the 'angle of refraction' for a ray of light?
Name the phenomenon due to which a pencil partly immersed in water and held obliquely appears to be bent at the water surface.
Water is optically denser than glass.
When a ray of light travels from water to air, it bends ............. the normal.
Draw a diagram showing the refraction of a light ray from water to glass. Label on it the incident ray, the angle of incidence (/), and the angle of refraction (r)
Define the principal focus of a concave mirror.
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.
The laws of reflection hold true for ______.
Observe the given figure and write appropriate phenomenon of light in the box.
State whether true or false. If false, correct the statement.
The angle of deviation depends on the refractive index of the glass.
The refractive index of a transparent medium is always greater than ______.
How does the light travel?
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.
