Question # 1

In transverse waves, the individual particles of the medium move:

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In circles

Perpendicular to the direction of level

Parallel to the direction of level

None of these

Example of progressive wave is

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transverse waves

longitudinal waves

both of them

none of them

transverse wave motion is possible in:

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Air

A mixture of NH₃and O₂

Strings

All of these

In case of mechanical waves, we study the motion of

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a single particle

collection of particle

any one of them

none of them

When the bob of simple pendulum is at mean position, its K.E will be

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maximum

minimum

zero

all of them

The weight 'mg' of the bob is resolved into

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one component

two components

three components

four components

The bob of a simple pendulum is suspended by

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string

heavy inextensible string

light extensible string

light inextensible string

SI unit of frequency is

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second

hertz

revolution

vibrations/sec

Two sources of sound are said to be coherent if

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The produce sounds of equal intensity

They produce sounds of equal frequency

They produce sound waves vibrating with the same phase

They produce sound waves with zero or constant phase difference all instant of time

If we increase the length of a simple pendulum four times, its time period will become

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2 times

3 times

4 times

6 times

The phase determines the

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displacement

amplitude

frequency

state of motion of vibrating body

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

The waves produced in a microwave oven have wavelength.

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12 mm

12 cm

12 m

12 mm

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

The maximum displacement of a body on either side of its equilibrium position is called

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frequency

amplitude

displacement

time period

If the mass of the simple pendulum becomes double, its time period

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increase

decreases

remains constant

none of them

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