In a PN-junction diode
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(a) The current in the reverse biased condition is generally very small |
|
(b) The current in the reverse biased condition is small but the forward biased current is independent of the bias voltage |
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(c) The reverse biased current is strongly dependent on the applied bias voltage |
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(d) The forward biased current is very small in comparison to reverse biased current |
(a) The current in the reverse biased condition is generally very small
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In a single slit diffraction experiment first minimum for red light (660 nm) coincides with first maximum of some other wavelength l'. The value of l' is
|
(a) 4400 Å |
(b) 6600 Å |
(c) 2000 Å |
(d) 3500 Å |
In an amplitude modulated wave for audio frequency of 500 cycle/second, the appropriate carrier frequency will be
|
(a) 50 cycles/sec |
(b) 100 cycles/sec |
(c) 500 cycles/sec |
(d) 50,000 cycles/sec |
Kinetic energy with which the electrons are emitted from the metal surface due to photoelectric effect is
|
(a) Independent of the intensity of illumination |
|
(b) Independent of the frequency of light |
|
(c) Inversely proportional to the intensity of illumination |
|
(d) Directly proportional to the intensity of illumination |
Curie is a unit of
|
(a) Length |
(b) It is not any unit |
(c) Activity |
(d) Atomic number |
The resistance of an ideal voltmeter is
|
(a) Zero |
(b) Very low |
(c) Very large |
(d) Infinite |