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Electromagnetic Field Theory

Electromagnetic Field Theory
A conductor of length 100 cm moves at right angles to a magnetic field of flux density 1.5 Wb/m2 with a velocity of 50 m/s. The induced emf in the conductor will be

 50 V.
 37.5 V.
 75 V.
 150 V.

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Electromagnetic Field Theory
A square corner reflector is used in which of the following?

Radio astronomy
All of these
Point-to-point communication
TV broadcast

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Electromagnetic Field Theory
A square corner reflector is used in

All of these
Tv broadcast
Radio astronomy
Point to point communication

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Electromagnetic Field Theory
The divergence of a vector is a scalar, while the curl of a vector is another

None of these
Scalar
Vector
Unit vector

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Electromagnetic Field Theory
A point pole has a strength of 4π × 10-4 weber. The force in newtons on a point pole of 4π × 1.5 × 10-4 weber placed at a distance of 10 cm from it will be

 3.75 N.
 7.5 N.
 20 N.
 15 N.

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Electromagnetic Field Theory
MUF is highest in periods of greatest sunspot activity.

False
True

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