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

Select an alternative from of uncertainly principle from the following_______________?

A. ∆E = h/m∆c(1-cosθ)

B. ∆E . ∆t = h

C. mc2 = hv

D. Any of above

The existence of Ether wind was experimentally rejected by__________________?

A. equal to its rest mass

B. double of its rest mass

C. infinite

D. zero

Stopping potential for a metal surface in case of photoelectric emission depends on_____________?

A. the threshold frequency for the metal surface

B. the intensity of incident light

C. the frequency of incident light and work function of the metal surface

D. all of the above

The linear momentum of an X-ray photon of wavelength 0.1A is_______________?

A. 6.625x1023N-s

B. 66.25x1023N-s

C. 662.5x1023N-s

D. data is insufficient

Linear momentum of a photon is_______________?

A. zero

B. hv/c2

C. hv/c

D. c2/hv

An observer shoots parallel to a meter stick at very high (relativistic) speed and finds that the length of meter stick is________________?

A. greater than one meter

B. less than one meter

C. one meter

D. a foolish question

Mark the wrong statement ?

A. a frame of reference which is either at rest or moves with a constant velocity is called an inertial frame of reference

B. an un-accelerated frame of reference is called an inertial frame of reference

C. all the frames of reference in uniform rectilinear motion are equivalent

D. Newtons laws of motion are valid in an accelerated (non inertial) frame of reference

kg mass will be equivalent to_________________?

A. 2.50 GWh

B. 25.00 GWh

C. 0.26 GWh

D. 250 GWh

Which one of the following radiations has the strongest photon?

A. T.V waves

B. Microwaves

C. X-rays

D. γ-rays

The relativistic energy E is equivalent to relativistic mass given by_______________?

A. Ec2

B. E/c2

C. E/c

D. c2/E

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