Physics Light, Reflection and Refraction Multiple Choice Questions & Answers - 1

Question: 1

The distance between optic centre and principal focus of the lens is known as

(A) Twice the focal length

(B) Principal axis

(C) Focal length

(D) Optic centre

Ans: C

Focal length

Question: 2

The magnifying glass is

(A) Simple microscope

(B) Compound microscope

(C) Crown glass prism

(D) Ground glass prism

Ans: A

Simple microscope

Question: 3

The periscope is used in

(A) Aeroship

(B) Aerospace

(C) Ship

(D) Submarine

Ans: D

Submarine

Question: 4

The SI unit of power of the lens is

(A) Dioptre

(B) Kilometer

(C) Angstrom

(D) Metre

Ans: A

Dioptre

Question: 5

The position of the object in a compound microscope is

(A) At F

(B) At 2F

(C) Beyond 2F

(D) Between F and 2F

Ans: D

Between F and 2F

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