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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