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Physics 10 Chapter 3 - Geometrical Optics - 5
1.
In which mirror, rays of light diverge from a point after reflection?
a) Convex mirror
b) Concavo-convex mirror
c) Concave mirror
d) Plane mirror
2.
Which mirrors are also called diverging mirrors?
a) Convex mirror
b) Concave mirror
c) Concavo-convex mirror
d) Plane mirror
3.
What is the other name of convex mirrors?
a) Diverging mirrors
b) Converging mirrors
c) Convex mirrors
d) Plano-concave mirrors
4.
What is the distance from the pole to the principal focus called?
a) Principle axis
b) Centre of curvature
c) Focal length
d) Vertex
5.
By which of the following formula, focal length and radius of curvature are related?
a) Formula: ƒ = 2 / R
b) Formula: ƒ = 2 R
c) Formula: ƒ = R + 2
d) Formula: ƒ = R / 2
6.
If radius of curvature is reduced, then what will be the effect on the focal length?
a) Focal length will reduce
b) No effect on focal length
c) None of these
d) Focal length will increase
7.
Which mirrors are used in head lights?
a) Converging mirrors
b) Convex mirrors
c) Parabolic mirrors
d) Concave mirrors
8.
In which of the following mirrors, focus lies behind the mirror?
a) Parabolic mirrors
b) Converging mirrors
c) Convex mirrors
d) Concave mirrors
9.
Which of the following statement is FALSE about concave mirror?
a) Inner curved side of concave mirror is reflecting
b) Size of image depends on the position of object
c) Size of image is always smaller than object
d) Both virtual and real images are formed by concave mirror
10.
In which of the following mirrors, focus lies behind the mirror?
a) Concave mirrors
b) Converging mirrors
c) Diverging mirrors
d) Parabolic mirrors
11.
In which of the following mirrors, focus lies in front of the mirror?
a) Diverging mirrors
b) Parabolic mirrors
c) Converging mirrors
d) Convex mirrors
12.
Which of the following statement is CORRECT about convex mirror?
a) Both virtual and real images are formed by concave mirror
b) Size of image depends on the position of object
c) Inner curved side of concave mirror is reflecting
d) The focus lies behind the mirror
13.
In which of the following mirrors, focus is real?
a) Parabolic mirrors
b) Converging mirrors
c) Convex mirrors
d) Diverging mirrors
14.
In which of the following mirrors, focus is virtual?
a) Concave mirrors
b) Diverging mirrors
c) Parabolic mirrors
d) Converging mirrors
15.
In which of the following mirrors, focus lies in front of the mirror?
a) Diverging mirrors
b) Concave mirrors
c) Convex mirrors
d) Parabolic mirrors
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