Question # 1

If a wave can be polarized, it must be

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An electromagnetic wave

A longitudinal wave

A progressive wave

A transverse wave

When a body is performing S.H.M., its acceleration is

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inversely proportional to the displacement

directly proportional to the applied force

directly proportional to the amplitude

directly proportional to the displacement but in opposite direction

Example of vibratory motion is

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mass suspended from a spring

a bob of simple pendulum

mass attached to a spring placed

all of them

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

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greater than the frequency of applied force

equal to the frequency of applied force

less than the frequency of applied force

all of them

When a wave is travels from one place to another, it transfers:

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Matter

Energy

Momentum

Both B and C

Waves transport energy

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without transport energy

with matter

both of them

none of them

The example of mechanical wave is

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waves in ropes

waves on water surface

waves in air

all of them

For production of beats the two sources must have

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Different frequencies and same amplitude

Different frequencies

Different frequencies, same amplitude and same phase

Different frequencies and same phase

The velocity of sound at same temperature is maximum in

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H₂

N₂

O₂

NH₃

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

A body is executing free vibrations when it oscilates

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with the interference of an external force

without the interference of an external force

with the interference of an internal force

none of them

Which of the following does not exhibit S.H.M?

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a plucked violin string

a mass attached to a spring

a train shunting between two terminals

a simple pendulum

Decibel is unit of

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Intensity of light

x-ray radiation capacity

sound loudness

Energy of radiation

When a body moves to and fro motion, this type of motion is called

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translatory motion

circular motion

oscillatory motion

all of them

The instantaneous velocity of a body moving along a circle is directed

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along the radius

along the tangent

away from the circle

none of them

Which waves are used in sonography?

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Microwaves

Infra red waved

Sound waves

Ultrasonic waves

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