MCQ
The magnetic susceptibility is negative for:
- APramagnetic materials only.
- BDiamagnetic materials only.
- CFerromagnetic materials only.
- DParamagnetic and ferromagnetic materials.
Explanation:
The magnetic susceptibility is negative for diamagnetic materials only.
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The reason of current flow in P-N junction in forward bias is
|
(a) Drifting of charge carriers |
(b) Minority charge carriers |
|
(c) Diffusion of charge carriers |
(d) All of these |
The relation among u, v and f for a mirror is:
In the circuit shown P ≠ R, the reading of the galvanometer is same with switch S open or closed. Then
|
(a) |
(b) |
(c) |
(d) |