MCQ
Cyclotron is used to accelerate:
- AElectrons.
- BNeutrons.
- CPositive ions.
- DNegative ions.
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Ohm's law is true
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(a) For metallic conductors at low temperature |
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(b) For metallic conductors at high temperature |
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(c) For electrolytes when current passes through them |
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(d) For diode when current flows |
Assertion : V-i characteristic of P-N junction diode is same as that of any other conductor.
Reason : P-N junction diode behave as conductor at room temperature.
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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. |
Which of the following electromagnetic waves have minimum frequency
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(a) Microwaves |
(b) Audible waves |
(c) Ultrasonic waves |
(d) Radiowaves |
Which of the following is an amorphous solid
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(a) Glass |
(b) Diamond |
(c) Salt |
(d) Sugar |