Physics MCQs: Most Important Questions for Exams

McqsTestz.com has uploaded a comprehensive collection of Physics MCQs covering a wide range of topics including mechanics, thermodynamics, electromagnetism, optics, modern physics, waves, fluids, and more. Perfect for students preparing for exams such as matriculation, intermediate, competitive tests, Lecturer and university-level assessments.

Physics MCQs

Errors in the transmission of power through optic fiber can be minimized by using a______________?

A. Multimode index fiber

B. Graded index fiber

C. Single mode step index fiber

D. Copper wire

Magnification of the astronomical telescope is_____________?

A. fo+fe

B. fo/fe

C. fe/fo

D. (1+fo/fe)L/fo

In optic fiber transmission system _____________ are used regenerate the dim light signal?

A. Diodes

B. Repeaters

C. Laser

D. Transformer

The value of critical angle for glass is_______________?

A. 42°

B. 47°

C. 52°

D. 50°

A point where the incident parallel rays of light converge or appear to diverge after passing through a lens is called______________?

A. center of curvature

B. focus

C. optical center

D. aperture

Dioptre power of an concave lens of 10 cm focal length is_______________?

A. 10 dioptre

B. 10 dioptre

C. 1 / 10 dioptre

D. 1 / 10 dioptre

The minimum distance between an object and its real image in a convex lens is_____________?

A. 2 f

B. 2.5 f

C. 3f

D. 4f

A convex lens gives a virtual image only when the objects lies_________________?

A. between principal focus and center of curvature

B. beyond 2 f

C. at the principal focus

D. between principal focus and optical center

Image of an object 5 mm high is only 1 cm high. Magnification produced by lens is__________________?

A. 0.5

B. 0.2

C. 1

D. 2

Least distance of distinct vision_____________?

A. increases with increase in age

B. decreases with increase in age

C. neither increases nor decreases

D. becomes infinite after 60 years

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