Question # 1

The speed of light in water is:

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2.0x10³ ms^-1

2.5x10³ ms^-1

2.3x10⁸ ms^-1

2.3x10^-8 ms^-1

isotopes are atom of same element with different.

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Atomic mass

Atomic number

Number of proton

Number of electron

Sun light consist of ____________ colour

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6

7

5

2

When a heavy nucleus splits into, lighter nuclei, the process would .

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Release nuclear energy

Absorb nuclear energy

Release chemical energy

Absorb chemical energy

The particles emitted from a hot cathode surface are:

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Positive ions

Negative ions

Protons

Electrons

the phenomena which is used in applying paints on the surface of different articles is called:

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electroplating

electroscope

electrostatic induction

electrolytes

Which component is output device of computer:

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CPU

C.D

Keyboard

Monitor

The character by which lound and faint sound can be distinguished is called:

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Pitch

Quality

Loudness

Intensity

When you rub a plastic rod against your hair several times and put it near some bits of paper, the pieces of papers are attracted towards it. What does this observation indicate?

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the rod and the paper are oppositely charged

the rod acquires a positive charge

the reod and the paper have the same charges

the rod acquires a negative charge

When a body moves to and fro about a point, its motion is called:

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Random motion

Vibratory motion

Linear motion

Rotatory motion

by connecting suitable high resistance in series with galvanometer it will convert into:

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voltmeter

galvanometer

ammeter

multimeter

The unit of spring constnat is:

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m

kg

Nm²

Nm^-1

Which wire has lowest resistance?

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Thick wire

Thin wire

Very thin wire

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