Mirror/ Lenses

Total Questions: 12

1 - A camera uses a convex lens to form an image which is ----:
A ) Real, inverted, diminished ✅
B ) Real, inverted, magnified
C ) Virtual, inverted, diminished
D ) Real, upright, diminished

2 - Which of the following can be used to focus sunlight at one point?
A ) Concave Mirror ✅
B ) Concave lens
C ) Plane Mirror
D ) Convex Mirror

3 - The image formed by a concave lens is always ----:
A ) Virtual and upright ✅
B ) Real and inverted
C ) Virtual and inverted
D ) Real and upright

4 - Light of the sun can be focused on the following lens----:
A ) Convex ✅
B ) Concave
C ) Cylindrical
D ) None of these

5 - A person suffering from near-sightedness (myopia) uses-----:
A ) Concave lens ✅
B ) Convex lens
C ) Bi Focal lens
D ) None of these

6 - Far sightedness can be corrected by ----:
A ) Concave ✅
B ) Convex
C ) Plain
D ) None of these

7 - The rear-view mirror of a motor vehicle is?
A ) Concave
B ) Convex ✅
C ) Plane
D ) Biconcave

8 - Which type of lens is found in the human eye?
A ) Bi-Convex ✅
B ) Concave
C ) Cylindrical
D ) None of these

9 - A lens that spreads out light rays is known as ----:
A ) Concave lens ✅
B ) Convex lens
C ) Cylindrical lens
D ) None of these

10 - The distance between the optical center and the focus of a lens is called ---------:
A ) Aperture
B ) Radius of curvature
C ) Focal length ✅
D ) Magnification

11 - The mirror that always form a virtual and dimenshed image is ----:
A ) Convex mirror ✅
B ) Concave mirror
C ) Plane Mirror
D ) None of these

12 - Which type of lens is used in a projector?
A ) Convex lens ✅
B ) Concave lens
C ) Cylindrical lens
D ) Plane lens
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