Physics Practice MCQ Page 18
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: 475 Class A amplifier has the property that plate current flows.
- continuously
- intermittently
- through its entire cycle of applied signal
- through positive half of the applied signal
Question: 476 When A is plotted against B on a graph, the result is a straight line
- A and B B are both constant
- A cannot be equal to B
- A is proportional to B
- A is Proportional to B2
Question: 477 A solid block is hanging from a spring balance which is having a scale in Newtons reads of 45 N. The mass of the block is nearly equal to
- 2.3 kg
- 4.6 kg
- 6.9 kg
- 8.2 kg
Question: 478 Moment of inertia of a solid sphere about a diameter is 8 gm cm2 (mass of sphere = 5 gm, radius = 2 cm.). The moment of inertia of the solid sphere about a tangent shall be
- 10 gm cm2
- 12 gm cm2
- 28 gm cm2
- 40 gm cm2
Question: 479 consider the belt drive in which the diameter of the driving pulley is 8 cm and the diameter of the driven pulley is 24 m. If the efficiency is 50 per cent, what is the actual mechanical advantage?
- 6
- 15
- 1.5
- 3
Question: 480 The total angular momentum of a system of particles
- remains constant under all circumstances
- changes when a net external force acts upon the system
- changes when a net external torque acts upon the system
- never remains constant
Question: 481 If a planet existed whose mass was twice that of the earth and whose radius was three times greater, a 10-kg mass on its surface would weigh:
- 2.2N
- 4.4N
- 6.7N
- 13.3N
Question: 482 When a ball on a string moves in a vertical circle, the tension on the string is greatest when
- string is made longer
- speed of the ball is increased
- the ball is at the highest point
- speed of the ball is decreased
Question: 483 What is the acceleration due to gravity of a meteor at 2 earth radii from the centre of the earth? Let us assume the acceleration due to gravity at one earth radius from the centre of the earth to be 10 m/sec2
- 10 m/sec2
- 7.07 m/sec2
- 5 m/sec2
- 2.5 m/sec2
Question: 506 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: 507 Let a disc, a cylinder, a solid sphere, and a spherical shell be rolled down in an inclined plane simultaneously. Which will reach first?
- Disc
- Cylinder
- Solid sphere
- Spherical Shell
Question: 508 A point on the edge of a rotating disc of radius 8 m moves through an angle of 2 rad. The length of arc described by the point is
- 0.25 m
- 4 m
- 16 m
- 4 rad
Answers to the questions of Physics on this page
Following list gives the correct choice for the answer of the Physics mcqs.
475 . C
476 . C
477 . A
478 . C
479 . C
480 . C
481 . A
482 . B
483 . B
506 . C
507 . C
508 . C
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