Question # 1

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

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rotatory motion

motion under gravity

angular motion

simple harmonic motion

Energy is not carried by

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Transverse progressive waves

Longitudinal vibration

Stationary waves

Electromagnetic

When temperature increase, the frequency of a tuning fork

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Increases

Decreases

Remains same

Increase or decreases depending on the material

Such oscillations in which the amplitude decreases steadily with time, are called

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resonance

force oscillations

large oscillations

damped oscillations

The velocity of sound in air depends upon

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Density and elasticity of gas

Pressure

Wavelength

Amplitude and frequency of sound

The waves which propagate by the collision of material particles are known as

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e.m. waves

mechanical waves

light waves

microwaves

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

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Frequency of beat changes with time

Frequency of beat changes with location of observer

All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves

Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves

Smaller the damping, greater will be the

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frequency

wavelength

amplitude

none of them

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

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maximum

zero

half of the maximum value

one third of the maximum value

The phase determines the

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displacement

amplitude

frequency

state of motion of vibrating body

Which of the following is the longitudinal waves?

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Sound waves

Waves on plucked string

Water waves

Light waves

SI unit of wave length is:

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Kilometer

Metre

Centimetre

Hertz

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

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waves

beat

interference

resonance

The example of mechanical wave is

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waves in ropes

waves on water surface

waves in air

all of them

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

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Stationary waves

Transverse waves

Both of these

None of these

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