physics MCQs – Page 26

Practise multiple-choice questions from physics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

physics Mcqs
501. If a material object moves with speed of light its mass becomes ________________?
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A. equal to its rest mass

B. infinite

C. double of its rest mass

D. zero

502. The circumference subtends an angle________________?
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A. ?/2 radian

B. 2? radian

C. 4? radian

D. ? radian

503. The normal blood pressure range for a human body is______________?
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A. 100 to 80 torr

B. 60 to 140 torr

C. 120 to 80 torr

D. 120 to 60 torr

504. The drag force is given by_________________?
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A. Gauss law

B. Newtons law

C. Pascals law

D. Stokes law
505. The error in measurement may occur due to_________________?
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A. Inappropriate method

B. Due to all reasons in A, B and C

C. The inexperience of a person

D. The faulty apprentice

506. In hydrogen spectrum which one of the following series lies in the ultraviolet region ?
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A. Bracket series

B. Lymann series

C. Pfund series

D. Balmer series

507. A digit zero in a measurement__________________?
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A. May be significant may not significant

B. Significant only if left to a significant figure

C. Always insignificant sign

D. Always significant

508. SI unit of the coefficient of viscosity is___________________?
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A. Kg.m.S

B. Kg m-1.S-1

C. Kg.m.S-1

D. Kg-1.m-1.S-1

509. Electrical resonance is observed in_______________?
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A. Radio

B. Microwave oven

C. Both in radio and microwave oven

D. Neither in radio nor in a microwave oven

510. A body can have constant velocity when it follows a_____________?
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A. Parabolic path

B. Rectilinear path

C. Circular path

D. Elliptical path

511. The minimum distance between an object and its real image in a convex lens is_____________?
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A. 4f

B. 2.5 f

C. 2 f

D. 3f

512. The equation ? = 1.22 ?/D was devised by_______________?
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A. Raleigh

B. Newton

C. Einstein

D. Planks

513. The frequency of the second pendulum is________________?
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A. 1 hertz

B. 1.5 hertz

C. 0.5 hertz

D. 2.5 hertz

514. The span of the broad jump depends upon_______________?
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A. Height of jump

B. Mass of the jumper

C. Angle of projection

D. None

515. Concentration of red cells in blood is about______________?
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A. 40%

B. 25%

C. 75%

D. 50%
516. A photon of wavelength 900nm behaves like a particle of mass______________?
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A. 1.84 x 10-44kg

B. 5.53 x 10-36kg

C. 0 kg.

D. 2.46 x 10-36kg
517. The angular speed of seconds hand of a watch in rads-1 is______________?
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A. ?/180

B. ?/30

C. ?/2

D. ?

518. Which one is the dimensionally correct equation ?
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A. V=f/t

B. f=vt

C. V=St

D. S=Vit+1/2at2
519. The mass attached to a spring executes ?
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A. Vibratory motion

B. Rotatory motion

C. S.H.M

D. Both A and C
520. Which equation is not dimensionally correct ?
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A. S=1/2at2

B. E=mc2

C. S=Vt2

D. Vf=Vi+at