MCQ
Dimensional formula of self-inductance is ___________ .
- A$M ^1 L^2 T^{-2} A^2$
- B$M ^1 L^{-2} T^{-2} A^2$
- C$M ^{-1} L^{-2} T^{-2} A^{-2}$
- ✓$M ^1 L^2 T^{-2} A^{-2}$
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The time period of a vibration magnetometer is T0. Its magnet is replaced by another magnet whose moment of inertia is 3 times and magnetic moment is 1/3 of the initial magnet. The time period now will be
|
(a) 3T0 |
(b) T0 |
(c) |
(d) T0/3 |
Electric room radiator which operates at 225 volts has resistance of 50 ohms. Power of the radiator is approximately
|
(a) 100 W |
(b) 450 W |
(c) 750 W |
(d) 1000 W |
An example of a diamagnetic substance is
|
(a) Aluminium |
(b) Copper |
(c) Iron |
(d) Nickel |