Question # 1

The time period of simple pendulum can be calculated by:

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T = 2π√L/g

T = 2 π √m/k

T = 2 π √g/L

T = 2 π √K/m

In simple Harmonic motion, the acceleration of the body is _____ proportional to the displacement.

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Inversely

Directly

Equally

None of these

The distance between two consecutive troughs or crests is called:

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wavelength

Frequency

Time period

None of these

The disturbance travelling in a medium is called:

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Wave motion

Simple harmonic motion

Motion

both a ,b

The wave properties

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Reflection

Refraction

Diffraction

All of these

The value of acceleration in simple harmonic motion at mean position is

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Maximum

Zero

10 N

Both a , b

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

Which of the following characteristic of a wave is independent of the others .

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speed

frequency

amplitude

wavelength

If the mass of the bob of a pendulum is increased by a factor of 3, the period of the pendulum’s motion will:

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Be increased by a factor of 2

Remain the same

Be decreased by a factor of 2

Be decreased by factor of 4

Which rays are used to send or receive digital information along aptical fibre:

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infrared

alpha rays

beta rays

mechanical

Which of the following is a method of energy transfer:

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Conduction

Radiation

Wave motion

All of these

It mass of bob o a simple pendulum is doubled, its time period.

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is doubled

become four times

remains same

none of the above

Mathematical formula of spring constant is:

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F/x

X/F

F/t

F/m

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

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Hook's law

Boyle's law

Newton's law

both 'b' and 'c'

The unit of frequency is:

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Heartz

Vibration per second

Cycle per second

all a, b, c

Diffraction of wave can be observed clearly only when the size of slit or obstacle is nearly__________ to the wavelength of the wave:

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Two times

Equal

Four times

None of these

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

Which is not a hardware:

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CPU

Window

Keyboard

Mouse

A device which has two ways of communication is:

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television

radio

hard disk

mobile phone

Thye Water waves obey the laws of

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Reflection

Refraction

Diffraction

All of these

Wave transfer

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Energy

Frequency

Wavelength

Velocity

The unit of spring constnat is:

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m

kg

Nm²

Nm^-1

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