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  9. An aeroplane of wingspan 10m...
An aeroplane of wingspan 10m flies from the equator towards the North Pole. The wings are perpendicular to the vertical component of the earths magnetic field (B = 4×10-5T). At maximum speed an emf of 96mV is induced across the wing tips. The maximum speed of the aeroplane is

150msec-1

384msec-1

38.4msec-1

200msec-1

Answer: B . 384msec-1
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