For a transistor, the current amplification factor is 0.8. The transistor is connected in common emitter configuration. The change in the collector current when the base current changes by 6 mA is
|
(a) 6 mA |
(b) 4.8 mA |
(c) 24 mA |
(d) 8 mA |
(c) 24 mA
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The approximate wavelength of a photon of energy 2.48 eV is
|
(a) 500 Å |
(b) 5000 Å |
(c) 2000 Å |
(d) 1000 Å |
The ozone layer absorbs
|
(a) Infrared radiations |
(b) Ultraviolet radiations |
(c) X-rays |
(d) g-rays |
Two electric bulbs rated 
watt V volts and 
watt V volts are connected in parallel and V volts are applied to it. The total power will be
|
(a) |
(b) |
(c) |
(d) |
The given truth table is of
|
(a) OR gate |
(b) AND gate |
(c) NOT gate |
(d) None of above |
At a place, if the earth's horizontal and vertical components of magnetic fields are equal, then the angle of dip will be
| (a) 30° | (b) 90° | (c) 45° | (d) 0° |
