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Question : 4
Total: 30
Two spherical bobs, one metallic and the other of glass, of the same size are allowed to fall freely from the same height above the ground. Which of the two would reach earlier and why?
Solution:
The glass bob will touch the ground before the metallic bob. The metallic bob intercepts the earth's magnetic field as it falls. So, According to Lenz's law, the induced current is such that it opposes the free falling motion of the metallic bob and it experiences an upward force. However, the glass does not induce any such currents.
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