Question # 1

Radio waves are:

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Longitudinal waves

Transverse waves

Electromagnetic waves

All of these

The displacement produced in the spring is directly proportional to force is called:

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Hook’s law

Boyle’s law

Newton’s law

Joule’s law

The speed of sound in a liquid is …………..than that in gases:

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Ten times

Fifteen times

Five times

Two times

the resistance of an ammeter should be:

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high

very high

low

constant

The sensation of sound persists in our brain for:

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0.1 sec

0.01 sec

1 sec

10 sec

The data stored in C.D. is.

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680 MB

650 MB

700 MB

750 MB

isotopes are atom of same element with different.

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Atomic mass

Atomic number

Number of proton

Number of electron

The oscillations of a system in the presence of _____________ force are called amp oscillations:

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Resistive force

Attractive force

Both of these

None of these

Capacitance is defined as:

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VC

Q/V

QV

V/Q

Mathematical formula of spring constant is:

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F/x

X/F

F/t

F/m

In case of OR and AND operation, if switches s₁ and s₂ both are open then lamp is:

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On

Off

Sometimes on and sometimes off

Neither on nor off

Bouncing back of light after striking the surface is called:

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Refraction

Reflection

Diffraction

Interference

A.C generator works on the principle of:

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Electrostatic induction

Electromagnetic induction

Law of gravitation

Third law of motion

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