| Assertion: A copper sheet is placed in a magnetic field. |
| If we pull it out of the field or push it into the field, we experience an opposing force. |
| Reason: According to Lenz's law eddy current produced in sheet opposes the motion of the sheet. |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) if assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: A
Solution :
When we pull a copper plate out of the magnetic field or push it into the magnetic field, magnetic flux linked with the plate changes. As a result of this Eddy currents are produced in the plate which oppose its motion (according to Lens's law).
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