Resistance of semiconductor at 0 K is
|
(a) Zero |
(b) Infinite |
(c) Large |
(d) Small |
Resistance of semiconductor at 0 K is
|
(a) Zero |
(b) Infinite |
(c) Large |
(d) Small |
(b) Infinite
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If
and
are the number of electrons and holes in a semiconductor heavily doped with phosphorus, then
|
(a) |
(b) |
(c) |
(d) |
The photoelectric threshold wavelength for a metal surface is 6600 Å. The work function for this is
|
(a) 1.87 V |
(b) 1.87 eV |
(c) 18.7 eV |
(d) 0.18 eV |
What is the net force on the square coil
|
(a) 25 |
(b) 25 |
|
(c) 35 |
(d) 35 |
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
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |