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A vibration magnetometer consists of two...

A vibration magnetometer consists of two identical bar magnets, placed one over the other, such that they are mutually perpendicular and bisect each other. The time period of oscillation in a horizontal magnetic field is 4 second. If one of the magnets is taken away, find the period of oscillation of the other in the same field.

A

Germinating pollen grain

B

Embryo

C

Unfertilized egg

D

Seed

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