Diode is used as a/an
|
(a) Oscillator |
(b) Amplifier |
(c) Rectifier |
(d) Modulator |
Diode is used as a/an
|
(a) Oscillator |
(b) Amplifier |
(c) Rectifier |
(d) Modulator |
(c) Rectifier
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A nucleus with mass number 220 initially at rest emits an a-particle. If the Q value of the reaction is 5.5 MeV, calculate the kinetic energy of the a-particle
|
(a) 4.4 MeV |
(b) 5.4 MeV |
(c) 5.6 MeV |
(d) 6.5 MeV |

A closely wound flat circular coil of 25 turns of wire has diameter of 10 cm and carries a current of 4 ampere. Determine the flux density at the centre of a coil
|
(a) 1.679 |
(b) 2.028 |
|
(c) 1.257 |
(d) 1.512 |
If an electron revolves in the path of a circle of radius of 0.5 m at frequency of 5 × 1015 cycles/s the electric current in the circle is (Charge of an electron = 1.6 × 10–19 C )
|
(a) 0.4 mA |
(b) 0.8 mA |
(c) 1.2 mA |
(d) 1.6 mA |