physics MCQs – Page 28

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 Review each marked answer and report any item that may be outdated or unclear.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
541. What is the outward force acting on a mass of 10 kg when rotating at one end an inelastic string 10m long at speed of 1m/s ?
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A. 1N

B. 100N

C. 2N

D. 10N

542. The least distance of distinct vision for a normal eye is_______________?
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A. 40 cm

B. 30 cm

C. 15 cm

D. 25 cm
543. Beta particles ionize an atom_________________?
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A. Due to the gravitational force

B. Due to a direct collision

C. Due to the electrostatic force of repulsion

D. Due to the electrostatic force of attraction

544. If an object is placed away from 2f of a converging lens then the image will be_______________?
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A. real and inverted

B. virtual and erect

C. real and erect

D. virtual

545. Stokes law is applicable if body has __________shape?
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A. Square

B. Rough

C. Spherical

D. Circular

546. The value of critical angle for glass is_______________?
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A. 47

B. 50

C. 42

D. 52

547. The radius of geostationary orbit from the centre of the earth is nearly______________?
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A. 36000km

B. 18000 km

C. 24000 km

D. 42000km
548. Absolute uncertainty in a measurement depends upon______________?
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A. Least count of the instrument

B. The magnitude of the measurement

C. Percentage error in the measurement

D. All of a, b and C

549. The carburettor of a car is an application of_______________?
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A. Venturi meter

B. Bernoulli equation

C. Both A and B

D. None

550. The number of significant figures in 5.400 is________________?
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A. None

B. 2

C. 3

D. 5

551. The maximum safe limit dose for persons working in a nuclear power station is ________________?
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A. 1 rem per week

B. 4 rem per week

C. 3 rem per week

D. 5 rem per week
552. The velocity of the mass attached to a spring is maximum at_______________?
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A. Mean position

B. Extreme position

C. Both A and B

D. None

553. For what displacement the P.E becomes 1/4 of its maximum value ?
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A. x = x/2

B. x = x(2)/2

C. x = x/4

D. x = x

554. If n number of the photon is striking on a metal surface then total momentum exerted is_______________?
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A. n

B. p

C. None

D. 0

555. The speed of the fluid is maximum in the venturi meter at_______________?
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A. None of these

B. Convergent duct

C. Divergent duct

D. Throat

556. Ideal fluid is_______________?
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A. Possess all properties

B. Steady flow

C. Non-viscous

D. Incompressible

557. After traveling through a vacuum a photon of light entering into some transparent denser medium. Thus the energy of light______________?
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A. Decreases because speed decreases

B. Increases then decrease

C. Remains same

D. Increases because wavelength decreases

558. Which branch of science plays an important role in the development of technology and engineering ?
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A. Biology

B. Chemistry

C. Geology

D. Physics
559. The blood flow is _______________ flow at systolic pressure?
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A. Turbulent

B. Laminar

C. Mixed

D. None

560. When a body is moving along a circular path it covers a certain angle in a given interval of time. Such type of motion is__________________?
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A. Vibratory motion

B. Rotatory motion

C. Linear motion

D. Angular motion