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Q. |
If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity |
A. | less than that of disc but in opposite direction |
B. | equal to that of disc and in the same direction |
C. | equal to that of disc and in the opposite direction |
D. | less than that of disc and in the same direction |
Answer» D. less than that of disc and in the same direction |
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