Reflection Of Light

QUESTION: 1

reflection of light is a process of

A.
absorbing of light rays
B.
sending back of light rays by falling on an object which enable us to see.
C.
change in direction of light rays
D.
enabling us to see .
E.
all of these

Solution:

QUESTION: 2

Which is best reflector of light?

A.
gold
B.
silver
C.
copper
D.
aluminium
E.
none of these

Solution:

QUESTION: 3

angle of reflection=

A.
angle of reflection
B.
0 degree
C.
angle of incidence
D.
90 degree
E.
45 degree

Solution:

angle of reflection=angle of incidence

QUESTION: 4

An incident ray makes an angle of 35 degree with the surface of a plane mirror .What is the angle of reflection?

A.
90 degree
B.
45 degree
C.
35 degree
D.
40 degree
E.
55 degree

Solution:

Here, the angle is given with the surface of mirror not the normal. So the angle of incident ray with the normal
= 90-35 = 55°
Now, we can say
Angle of incidence =angle of reflection= 55 degree

QUESTION: 5

David is observing his image in a plane mirror. The distance between the mirror and imag is 4 m. If he moves 1 m towards the mirror then the distance between david and his image will be