Question # 1

Which frequency is used by elephants to communicate with each other:

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Zero frequency

Low frequency

Medium frequency

High frequency

Waves transfer:

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Energy

Wavelength

Velocity

frequency

We can distinguish between the notes of a piano and flute due to ………… of sound.

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Loudness

Pitch

Quality

Intensity

Which of the following is an example of simple harmonic motion ?

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Motion of the simple pendulum

The motion of ceiling fan

The spining of the Earth on its axis

A bouncing ball on a floor

Which of the following is not Processing?

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arranging

manipulation

calculating

gathering

That period in which voltage repeats its value in equal intervals is called:

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cycle

Time period

Frequency

Amplitude

After how much time the echo must be heard?

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0.1 s

0.10 s

0.20 s

0.50 s

Thermocouples convert:

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Heat energy into electrical energy

Heat energy into light energy

Heat energy into mechanical energy

Chemical energy into electrical energy

Value of ‘k’ depends upon:

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System of unit

Nature of medium

Both a and b

None of these

The symbol of alpha particles is:

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4AHe

42He

0-1B

00Y

The output of OR gate would be '0' When:

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Both of its inputs are zero

One of its two inputs is zero

Both of its inputs ar 1

Any one of its inputs is 1

The part of waves at which particles of the medium are below the normal position are called:

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Extreme positon

Crest

Trough

None of these

What type of graph is in between V and I, if metal obeys ohm’s law:

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Curved

Parabola

Straight line

None of these

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