31. Tape recorder should not be kept near one of the following things : A.Clock B.Magnet C.Electrical switchboard D.Radio
Option B Solution: The cassette tape contains a magnetic strip wound around two spools. Tiny magnetic particles are randomly scattered throughout the tape. A tape recorder should not be kept near a magnet as the latter can cause the magnetic material to be pushed and pulled out of place. Rearranging the magnetic particles erases the sound.
