physics MCQs – Page 29

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 Review each marked answer and report any item that may be outdated or unclear.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

561. A lens which converges a beam of parallel rays to a point is called______________?
0

A. converging (or convex) lens

B. diverging (or concave) lens

C. plano concave lens

D. plano convex lens

562. According to equation of continuity A1V1 = A2V2 = constant. The constant is equal to_______________?
0

A. Mass of fluid

B. Flow rate

C. The density of the fluid

D. Volume of fluid

563. The energy radiated is directly proportional to the fourth power of Kelvins temperature is________________?
0

A. Stephens law

B. Plancks

C. Rayleigh-Jeans law

D. Karl-Weins law

564. The instrument used to measure blood pressure is called____________?
0

A. Sphygmomanometer

B. Blood pressure

C. Venturimeter

D. Sonometer

565. Pair production cannot take place in a vacuum as ________________?
0

A. Energy is not conserved

B. Mass is not conserved

C. Momentum is not conserved

D. The chargee is not conserved

566. A satellite moving around the earth constitutes______________?
0

A. An inertial frame of reference

B. Non-inertial frame

C. Neither inertial nor non-inertial

D. Both inertial and non-inertial

567. Photon of highest frequency will be absorbed when transition takes place from_____________?
0

A. 4th to 5th orbit

B. 1st to 5th orbit

C. 3rd to 5th orbit

D. 2nd to 5th orbit

568. For confinement of electron in a box of radius 10-14m the electron, speed should be_____________?
0

A. Should be greater than the speed of light.

B. 107m/sec

C. Not be wave-like

D. Be zero

569. Venturi meter is used to measure_________________?
0

A. Fluid pressure

B. Fluid speed

C. None

D. Fluid density

570. The product of the frequency and time period is equal to_________________?
0

A. 1

B. 2

C. 3

D. 4

571. Forced vibration is known as_____________________?
0

A. Simple harmonic vibration

B. Driven harmonic vibration

C. Free vibration

D. Natural vibration

572. In Compton scattering, the change in wavelength is maxed if_______________?
0

A. The angle of scattering is 180

B. The angle of scattering is 0

C. The angle of scattering is 90

D. The angle of scattering is 60

573. Displacement of the body in S.H.M is equal to amplitude when the body is at_______________?
0

A. Mean position

B. Extreme position

C. Elsewhere

D. None

574. At Murree Hills (Assume the value of g changes). If we use a simple pendulum as time standard then one-second duration will_____________?
0

A. Increase

B. Remains the same

C. Decrease

D. Is zero

575. Which of the following is not a correct representation method for prefixes______________?
0

A. 1mm

B. 10km

C. 1000um

D. Both A and B

576. The period of a circular motion is given by_______________?
0

A. T = ?v

B. T = 2?r

C. T = ?w

D. T = 2?r/v

577. Simple harmonic motion is a type of________________?
0

A. Rotational motion

B. Circular motion

C. Vibratory motion

D. Musical arrangement

578. For which position maximum blood pressure in the body have the smallest value ?
0

A. Laying horizontally

B. Sitting on chair

C. Standing straight

D. Sitting on ground

579. Mark the wrong statement ?
0

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

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

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

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

580. The angular speed for daily rotation of the earth in rad S-1 is______________?
0

A. 3.7 x 10 7.3 x 5 radians/second

B. 7.3 x 10-5 radians/second

C. 7.3 x 10 radians/second

D. 7.3 x 5 radians/second

Previous Next

Showing 561 to 580 of 857 mcqs