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Multiple Choice Questions GK on Lenses and mirrors

Question 1 : Which one among the following is used to make periscope?

A. None of the above

B. Plane mirror

C. Concave mirror

D. Concave lens

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Question 2 : Which of the following is incorrect?

A. The real image given by a concave mirror is inverted.

B. The virtual image given by a concave mirror is inverted.

C. A concave mirror can give a magnified real image.

D. A concave mirror can give a magnified virtual image.

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Question Listed : Lens, Mirror, Concave Lens, Concave Mirror,

Question 3 : What would be the number of images formed of an object in two mirrors placed at right angles to each other?

A. six

B. four

C. three

D. two

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Question 4 : What type of mirror is used in a view finding mirror of a vehicle?

A. Paraboloidal mirror

B. Plane mirror

C. Concave mirror

D. Convex mirror

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Question Listed : Lens, Mirror, Concave Lens, Concave Mirror,

Question 5 : What kind of lens is used by short-sighted persons?

A. compound

B. cylindrical

C. concave

D. convex

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Question Listed : Lens, Mirror, Concave Lens, Concave Mirror,

Question 6 : What kind of image is formed by a concave lens irrespective of the position of the object?

A. real, inverted and magnified

B. virtual, upright and magnified

C. real, upright and diminished

D. virtual, upright and diminised

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Question 7 : What kind of image is created by a concave lens?

A. upright and smaller

B. inverted and larger

C. inverted and smaller

D. upright and smaller

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Question 8 : What is the power of the lens, if the far point of a short-sighted eye is 200 cm?

A. -1.5 D

B. 1 D

C. 2 D

D. -0.5 D

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Question 9 : The ratio of the focal length of the objective to the focal length of the eyepiece is greater than one for

A. neither microscope nor telescope

B. both microscope and telescope

C. a telescope

D. a microscope

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Question 10 : The radius of curvature of a plane mirror

A. None of the above

B. can be anywhere between zero and infinity

C. is infinity

D. is zero

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Question 11 : The mirror used for the head light of a car is

A. parabolic concave

B. cylindrical

C. plane

D. spherical concave

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Question Listed : Lens, Mirror, Concave Lens, Concave Mirror,

Question 12 : The image formed by a convex mirror of a real object is larger than the object

A. for no value of u

B. for all values of u

C. when u > 2f

D. when u < 2f

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Question 13 : The human eye is like a camera and hence it contains a system of lens. The eye lens forms

A. a straight or upright, real image of the object on the iris

B. an inverted, real image of the object on the retina

C. an inverted, virtual image of the object on the retina

D. a straight or upright, real image of the object on the retina

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Question Listed : Lens, Mirror, Retina,

Question 14 : The head mirror used by E.N.T doctors is -

A. Plano-convex

B. Plane

C. Convex

D. Concave

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Question Listed : Lens, Mirror, Concave Lens, Concave Mirror,

Question 15 : Suppose you are standing 1 m in front of a plane mirror. What should be the minimum vertical size of the mirror so that you can see your full image in it?

A. twice your height.

B. half of your height.

C. 2 m

D. 0.50 m

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Question Listed : Lens, Mirror,

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