In a PNP transistor working as a common-base amplifier, current gain is 0.96 and emitter current is 7.2 mA. The base current is
|
(a) 0.4 mA |
(b) 0.2 mA |
(c) 0.29 mA |
(d) 0.35 mA |
(c) 0.29 mA
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The distance between the body centred atom and a corner atom in sodium (a = 4.225 Å) is
|
(a) 3.66 Å |
(b) 3.17 Å |
(c) 2.99 Å |
(d) 2.54 Å |
The energy stored in the condenser is
|
(a) QV |
(b) |
(c) |
(d) |
When yellow light is incident on a surface, no electrons are emitted while green light can emit. If red light is incident on the surface, then
|
(a) No electrons are emitted |
|
(b) Photons are emitted |
|
(c) Electrons of higher energy are emitted |
|
(d) Electrons of lower energy are emitted |
The wavelength of Lyman series is
|
(a) |
(b) |
(c) |
(d) |
In the given figure each plate of capacitance C has partial value of charge
|
(a) CE |
(b) |
(c) |
(d) |
