Question # 1

In frequency modulation which factor changed.

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Amplitude of charge carriers

Frequency of charge carriers

Amplitude of signal

Frequency of signal

Farad is defined as

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"Coulomb/Volt

Ampere /Volt

Coulomb /Joule

Volt/Coulomb

The unit for Plank's constant is:

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Js^-1

Jm

Js

Jm²

The radius of 10th orbit in hydrogen atom is.

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0.053 nm

0.53 nm

5.3 nm

53 nm

A photon while passing thorugh a magnetic field are deflected towards:

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North pole

South pole

Are ionized

None of these

Commutator was invented by:

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William bills

William Gates

William tells

William Sturgeon

In gas the charge carriers are:

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Electrons

Ions

Both a & b

None of above

Eddy current is produced when:

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A metal is light in varying magnetic field

A metal is kept in steady magnetic field

A circular coil is placed in a steady magnetic field

A current is passed through a circualr coil

Maximum Compton shift is observed at.

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30^oC

90^oC

45^oC

180^oC

The force of Neutron due to field of 10² N/C is.

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1.6 x 10^-17N

1.6 x 10^-19N

Zero

1.6 x 10^-21N

Electric flux is a:

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Scalar quantity

Vector quantity

Variable quantity

None of these

If the distance between the two charged bodies is halved, the force between them becomes.

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Double

Half

Four times

One times

At high frequency, the current through a capacitor is

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Small

Infinity

Zero

Large

The fraction change in resistance per Kelvin is known as:

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Temperature coefficient of Resistance

Coefficient of voltage of change

Thermal expansion

All of the above

The SI unit of resistivity is.

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Ohm m-2

Ohm m-1

Ohm m

Ohm

Due to polarization, electric field E.

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Increase

Decrease

First increases then decreases

Remain same

In case of inductor , energy is stored in the

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Electric field

Magnetic field

Potential field

Gravitational field

Shear modulus is expressed as:

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G = tanθ/F/A

F/A/tanθ

F/tanθ

tanθ/A

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