- AFor uniform regions
- BFor all regions
- ✓For regions following the inverse square law
- DRule has nothing to do with region
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Find the equivalent resistance between the points a and b
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(a) 2 W |
(b) 4 W |
(c) 8 W |
(d) 16 W |
What is the de-Broglie wavelength of the α - particle accelerated through a potential difference V
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(a) |
(b) |
(c) |
(d) |

Assertion : A transformer cannot work on dc supply.
Reason : dc changes neither in magnitude nor in direction.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |
Assertion : An artificial satellite with a metal surface is moving above the earth in a circular orbit. A current will be induced in satellite if the plane of the orbit is inclined to the plane of the equator.
Reason : The current will be induced only when the speed of satellite is more than 8 km/sec.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |