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Physics Fsc Part 1 Full Book Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | A rod at rest appears to an observer just a mere point when he moves across it as speed. |
<p>Equal to the speed of light</p> <p>Double the speed of light</p> <p>Three-fourth the speed of light</p> <p>None of the above</p> |
| 2 | Relativistic velocity is of the order of. |
<p>1/15 of the velocity of light</p> <p>1/20 of the velocity of light</p> <p>1/10 of the velocity of light</p> <p>1/25 of the velocity of light</p> |
| 3 | Which one of the following physical quantities is indpednent of relativistic speed. |
<p>Charge</p> <p>Length</p> <p>Mass</p> <p>Time</p> |
| 4 | The speed of beam light of a car while moving with high speed as compared to its rest positionis |
<p>Greater</p> <p>Less</p> <p>Same</p> <p>Zero</p> |
| 5 | If an observeris moving in the same direction as a sound wave, the velocity of the wave seems to be |
<p>Less</p> <p>More</p> <p>Constant</p> <p>Sum of the two velocities</p> |
| 6 | Relativistic mechanics yields results different from classical mechanics for objects moving with. |
<p>Low velocity</p> <p>Velocity equal to that of sound waves</p> <p>Veloitiy geater than sound waves</p> <p>Velocity approaching that of lignt</p> |
| 7 | Production of induced emf in a coil is linked with. |
<p>Nature of coil</p> <p>Shape of coil</p> <p>Flux through coil</p> <p>Chagn in flux through coil</p> |
| 8 | Lenz's law deals with the. |
<p>Magnitude of induced current</p> <p>Magnitude of induced emf</p> <p>Direction of induced emf</p> <p>Direction of induced current</p> |
| 9 | Lenz's law is consistent with |
<p>Law of conservation of energy</p> <p>Law of conservation of charge</p> <p>Law of conservation of momentum</p> <p>Law of conservation of mass</p> |
| 10 | The direction of induced current is always so as ato oppose the chagne. Which causes the current, This is the statemetn of. |
<p>Lenz's law</p> <p>Faraday's law</p> <p>Gauss's law</p> <p>Joule's law</p> |
| 11 | The motional emf depends upon the. |
<p>Length of a conductor</p> <p>Strength of a magnetic field</p> <p>Speed of the conductor</p> <p>All of the above</p> |
| 12 | The current produced when the conductor moes across a magnetic field is called |
<p>Electric potential</p> <p>Electrosatic induction </p> <p>Electromagnetic induction </p> <p>Electric polarization</p> |
| 13 | The value of the induced emf is directly proportional to the rate of change of. |
<p>Magnetic flux</p> <p>Electric flux</p> <p>Force</p> <p>Work</p> |
| 14 | What is induced when there is a relative motion between coil and the magnet. |
<p>Potential </p> <p>emf</p> <p>Flux</p> <p>Energy</p> |
| 15 | The e.m.f. produced in th conductor when it moves across a magnetic field is called. |
<p>Self emf</p> <p>Motonal emf</p> <p>Mutual emf</p> <p>Induced emf</p> |
| 16 | The fact that emf produced by motion of a coil across a magnetic field was discovered by |
<p>Michael Faraday</p> <p>Henry</p> <p>Orested</p> <p>Both a and b</p> |
| 17 | The work done by a magnetic field for revolving the chrged particle q in a circular path will be. |
<p>Fd</p> <p>Max</p> <p>Nagetive</p> <p>Zero</p> |
