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Physics 10 Chapter 3 - Geometrical Optics - 6
1.
Which of the following statement is CORRECT about concave mirror?
a) Outer curved side of concave mirror is reflecting
b) Only virtual and erect image is formed by concave mirror
c) The focus lies in front of the mirror
d) Size of image is always smaller than object
2.
In which of the following mirrors, focus is real?
a) Concave mirrors
b) Diverging mirrors
c) Convex mirrors
d) Parabolic mirrors
3.
In which of the following mirrors, focus is virtual?
a) Parabolic mirrors
b) Converging mirrors
c) Convex mirrors
d) Concave mirrors
4.
Which of the following statement is CORRECT about convex mirror?
a) Size of image depends on the position of object
b) The focus is virtual
c) Inner curved side of concave mirror is reflecting
d) Both virtual and real images are formed by concave mirror
5.
Which of the following statement is CORRECT about concave mirror?
a) Only virtual and erect image is formed by concave mirror
b) Outer curved side of concave mirror is reflecting
c) Size of image is always smaller than object
d) The focus is real
6.
In which of the following mirrors, centre of curvature lies behind the mirror?
a) Concave mirrors
b) Diverging mirrors
c) Converging mirrors
d) Parabolic mirrors
7.
In which of the following mirrors, centre of curvature lies behind the mirror?
a) Concave mirrors
b) Convex mirrors
c) Parabolic mirrors
d) Converging mirrors
8.
In large shopping centres, which mirrors are used for security purposes?
a) Parabolic mirrors
b) Concave mirrors
c) Converging mirrors
d) Convex mirrors
9.
What is the relationship between object distance p, image distance q and focal length ƒ of the mirror called?
a) Mathematical formula for image location
b) Graphical method for image location
c) Mirror formula for image location
d) Ray diagram method for image location
10.
With which symbol, image distance is denoted?
a) Image distance = i
b) Image distance = q
c) Image distance = p
d) Image distance = ƒ
11.
With which symbol, object distance is denoted?
a) Image distance = o
b) Image distance = q
c) Image distance = ƒ
d) Image distance = p
12.
With which symbol, focal length is denoted?
a) Image distance = i
b) Image distance = o
c) Image distance = ƒ
d) Image distance = F
13.
By which of the following formula, focal length and radius of curvature are related for convex mirrors?
a) Formula: ƒ = -2 R
b) Formula: ƒ = -R + 2
c) Formula: ƒ = -2 / R
d) Formula: ƒ = -R / 2
14.
Write down the mirror formula?
a) Mirror formula: 1/ƒ = (p/1) + (q/1)
b) Mirror formula: 1/ƒ = (1/p) + (1/q)
c) Mirror formula: 1/ƒ = (1/p) - (1/q)
d) Mirror formula: 1/ƒ = (p/1) - (q/1)
15.
An object is 14 cm in front of a convex mirror. The image is 5.8 cm behind the mirror. What is the focal length of the mirror?
a) 4.1 cm
b) 8.2 cm
c) 9.9 cm
d) 20 cm
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