Optics AFCAT Questions

AFCAT Physics

Optics MCQ Questions


7.
Two plane mirrors are placed parallel to each other. The number of images formed is:
A.
2
B.
1
C.
Infinite
D.
Zero
😑 View Answer Rough Work Error
ANSWER :
C. Infinite
8.
The focal length of a concave mirror is related to its radius of curvature R by:
A.
f = 2R
B.
f = R/4
C.
f = R/2
D.
f = R
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ANSWER :
C. f = R/2
9.
A concave mirror is also known as:
A.
Converging mirror
B.
Plane mirror
C.
Diverging mirror
D.
Cylindrical mirror
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ANSWER :
A. Converging mirror
10.
The image formed by a convex mirror is always:
A.
Virtual, erect, and magnified
B.
Real, erect, and diminished
C.
Virtual, erect, and diminished
D.
Real, inverted, and magnified
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ANSWER :
C. Virtual, erect, and diminished
11.
Which mirror is used as a rear-view mirror in vehicles?
A.
Plane mirror
B.
Concave mirror
C.
Cylindrical mirror
D.
Convex mirror
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ANSWER :
D. Convex mirror
12.
Dentists use which type of mirror to examine teeth?
A.
Bifocal mirror
B.
Plane mirror
C.
Convex mirror
D.
Concave mirror
😑 View Answer Rough Work Error
ANSWER :
D. Concave mirror