Physics Practice MCQ Page 33
Multiple Choice questions for Physics in the sets of 10 each on one page with questions and answers. All sets are useful in the preparation of subject tests for employment or admission.
Question: 3581 The amplifier in which the grid bias is appreciably greater than the cut off value is
- class A amplifier
- class B amplifier
- class AB amplifier
- class C amplifier
Question: 3699 An automobile that is to win a trailer is accelerating on a level road. the force that the automobile exerts on the trailer is
- equal tot he force the trailer on the road
- greater than force the trailer exerts on the automobile
- equal to the force the trailer exerts on the automobile
- equal to the force the road exerts on the trailer
Question: 3700 Scientific theories
- must constantly be reviewed to see whether they are in accordance with new experimental observations
- are summaries of particular experiments
- represent guesses that have not yet been compared with observational data
- are laws of nature that are not subject to revision
Question: 3701 A bullet whose initial kinetic energy is 400 J strikes a block where an 8000N resistive force brings it to a stop. The depth of penetration into the woood is approximately
- 0.2 m
- not enough information
- 0.5 m
- 0.05 m
Question: 3705 A hollow metal sphere is filled with water and is hung by a long thread. It is then made to oscillate. If water slowly flows through a small hole in the bottom, how will the period of oscillation be affected?
- the period will go on decreasing till the sphere is empty
- the period will go on increasing till the sphere is empty
- the period will remain unchange throughout
- the period will first increase, than it will decrease till it is empty and the period will be finally same as when the sphere was full of water
Question: 3707 Which of the following was a direct result of Michelson's and Moraley's experiment?
- velocity of earth with respect to hypothetical either was not zero
- velocity of earth with respect to hypothetical either was zero
- in the sun's spectrum there are black lines
- none of the above is correct
Question: 3708 The square of a satellite time of revolution round the earth is
- directly proportional tot he cube of radius of orbit
- inversely proportional to the cube of radius of orbit
- directly proportional to radius of orbit
- inversely proportional to radius of orbit
Question: 3710 Turbulent flow occurs when the Reynold number is abvoe
- 1000
- 500
- 3000
- 5000
Question: 3711 An imaginary planet has twice the mass and twice the radius of the earth. The acceleration of gravity at its surface is
- 4.9 m/sec2
- 19.5 m/sec2
- 9.8 m/sec2
- 39.2 m/sec2
Question: 3714 A solid lead cylinder of radius R, a solid aluminum cylinder of radius R, a hollow lead cylinder of radius R/2, and a solid lead sphere of radius R all start rolling down an inclined plane at the same time. The one that reaches the bottom first is the
- solid aluminum cylinder
- hollow lead cylinder
- solid lead cylinder
- solid lead sphere
Question: 3715 A satellite is orbiting close to the earth. In order to make it move to infinity, its orbital speed is to be increased by
- 20%
- 10%
- 41.4%
- 100%
Question: 3717 Two bars of lead, one twice as heavy as the other, are heated to a temperature of 200°c. The heavy bar
- contains the same amount of heat as the lighter bar
- contains half as much heat as the lighter bar
- contains twice as much heat as the lighter bar
- may contain more or less heat than the lighter bar, depending upon the precise shapes of the bars
Answers to the questions of Physics on this page
Following list gives the correct choice for the answer of the Physics mcqs.
3581 . D
3699 . B
3700 . A
3701 . D
3705 . D
3707 . B
3708 . C
3710 . C
3711 . A
3714 . D
3715 . C
3717 . C
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MCQ for Practicing Subject Tests