
- ✓A
- BB
- CC
- DD

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Assertion : Acceleration of a magnet falling through a long solenoid decreases.
Reason : The induced current produced in a circuit always flow in such direction that it opposes the change or the cause the produced it.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |
A PN- junction has a thickness of the order of
| (a) 1 cm | (b) 1 mm |
(c) |
(d) |
A wave can transmit ...... from one place to another
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(a) Energy |
(b) Amplitude |
(c) Wavelength |
(d) Matter |