Question # 1

Electro encephalon graph is the diagnostic test for the working of.

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Eye

Heart

Brain

Lungs

In frequency modulation which factor changed.

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Amplitude of charge carriers

Frequency of charge carriers

Amplitude of signal

Frequency of signal

When Ohm meter gives full scale deflection it indicates.

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Zero resistance

Infinite resistance

Small resistance

Very High resistance

Identify the practical application of electrostatic force.

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Inkjet printer

x rays

Laser

A.C. Generator

The unit of temperature co efficient of resistivity is.

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Ohm -m

K-1

K

Ohm

Kx -Xrays are produced due to transition of electron from.

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K to L shell

L to K shell

M to K shell

M to L shell

In case of reverse biasing, current is flown due to:

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Minority charge carriers

Majority charge carriers

Electrons

Protons

The solid with definite M.L are called:

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Crystalline

Amorphous

Polymeric

None of above

Electro magnetic waves emitted from radio antenna are.

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Stationary

Longitudinal

Transvers

Both a and b

When platinum wire is heated, it changes to cherry red at temperature.

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500^oC

900^oC

1100^oC

1300^oC

Coercive force is used to

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Demagnetize the material

Magnetize the material

Extend it

None of these

Number of Isotopes of Neon gas are

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2

3

4

1

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

A metal rod of 1 m is moving at a speed of 1 ms-1 in a direction making an angle 30^o with 0.5 T magnetic field . The emf produced is.

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0.25 N

2.5 N

0.25 V

2.5 V

The field is strong and uniform.

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Inside the solenoid

Surrounding of solenoid externally

Perpendicular to solenoid

All of above

A voltmeter is always connected in

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Parallel

Series

Perpendicular

Straight line

The potential difference between the head and tail of an electrical to

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600 Volt

700 Volt

800 Volt

900 Volt

106 electrons are moving through a wire per second the current developed is:

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1.6 x 10-19 A

1 A

1.6 x 10-13A

106 A

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