Question # 1

Speed of light in air is ms^-1

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3 x 10⁸

3 x 10¹¹

3 x 10⁵

340

Which we double the voltage in a simple electric circuit. We double the

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Current

Power

Resistance

both a and b

Electric field lines were introduced by:

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Faraday

Newton

Coulomb

Joule

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

The current which changes its direction is called:

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Current

A.C.

Conventional current

D.C.

Image formed on a camera is:

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real,invertred, and diminished

virtual, upright and diminshed

virtual, upright and magnified

real, inverted and magnified

Which combination forms NAND gate:

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AND & OR

AND & NOT

NOT & OR

NAND & NOT

In the presence of a charged body, an insulated conductor develops positive charge at one end and negative charge at the other end, this i- called:

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Electrostatics

Electrostatic induction

Magnetism

Electromagnetic induction

which is a major cause of fires and explosions at many places:

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match sticks

bombs

static electricity

magnetism

Which of the following characteristics of a wave is independent of the others:

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speed

frequency

amplitude

wavelength

Ultrasound waves carry energy:

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Less

More

Equal

None of these

Which component is output device of computer?

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CPU

C.D

Keyboard

Monitor

The loudness of a sound is most closely related to its:

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Frequency

Period

Wavelength

Amplitude

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