Advertisements
Advertisements
Question
Write all the capital letters of the alphabet which look the same in a plane mirror.
Advertisements
Solution
All the capital letters of the alphabet that look the same in a plane mirror are W, X, V, A, H, M, O, I and T.
APPEARS IN
RELATED QUESTIONS
The image of an object formed by a plane mirror is:
(a) virtual
(b) real
(c) diminished
(d) upside-down
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.
A man sits in an optician's chair looking into plane mirror which is 2 m away from him and views the image of a chart which faces the mirror and is 50 cm behind his head. How far away from his eyes does the chart appear to be?
If a ray of light goes from a rarer medium to a denser medium, will it bend towards the normal or away from it?
State whether the following statement is true or false:
Refraction occurs because light slows down in denser materials.
What is meant by the ‘angle of incidence’ for a ray of light?
State two factors on which the lateral displacement of the emergent ray depends.
The speed of light is more in glass than in water.
What do you understand by refraction of light?
A small air bubble in a glass block when seen from above appears to be raised because of ______.
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.
State whether true or false. If false, correct the statement.
The angle of deviation depends on the refractive index of the glass.
Numerical problems.
The speed of light in water is 2.25 × 108 ms–1. If the speed of light in vacuum is 3 × 108 ms–1, calculate the refractive index of water.
What is refractive index?
The angle of incidence for a ray of light having zero reflection angle is ______.
Mirage is an example of refraction and the total internal reflection of light.
Why a pencil partly immersed in water appears to be bent at the water surface.
A normal is an imaginary line drawn ________ to the boundary at the point of incidence.
To a crane, a fish appears 6 cm below the water surface. Taking the refractive index of water as \[\frac{4}{3}\], the real depth of the fish below the surface is:
