An electron revolves 6 × 1015 times/sec in circular loop. The current in the loop is
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(a) 0.96 mA |
(b) 0.96 m A |
(c) 28.8 A |
(d) None of these |
An electron revolves 6 × 1015 times/sec in circular loop. The current in the loop is
|
(a) 0.96 mA |
(b) 0.96 m A |
(c) 28.8 A |
(d) None of these |
(a) 0.96 mA
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In X-ray experiment Ka, Kb denotes
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(a) Characteristic |
(b) Continuous wavelength |
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(c) a, b-emissions respectively |
(d) None of these |
In a nuclear reaction, which of the following is conserved
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(a) Atomic number |
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(b) Mass number |
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(c) Atomic number, mass number and energy |
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(d) None of these |
Assertion : Moon is seen as it partly reflects the sun light falling on it
Reason : Moon is a satellite of earth. It does not emit light of its own
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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. |

A transmitter supplies 9 kW to the aerial when unmodulated. The power radiated when modulated to 40% is
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(a) 5 kW |
(b) 9.72 kW |
(c) 10 kW |
(d) 12 kW |