Question # 1

Which of the following characteristics of a wave is independent of the others:

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speed

frequency

amplitude

wavelength

The waves in which particles of the medium vibrate perpendicular to the direction of propagation of waves are called:

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Transverse waves

Longitudinal waves

Electromagnetic waves

None of these

Which is not a hardware:

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CPU

Window

Keyboard

Mouse

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 way of doing business by using web is called:

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Sources of entertainment

Web business

E-commerce

E-mail

If the length of a simple pendulum is halved its time period will become:

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T/2

T = T/√2

√2T

2T

To get a design on the computer screen by moving a pointer with the help of mouse is called:

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word processing

graphic designing

data managing

telecommunication

If the distance is nspring is 'x' of mass 'm' attached with a spring then restoring force is:

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F =ma

F =kx

F = mx

F= m/a

A large ripple tank with a vibrator working at a frequency of 30 Hz produces 25 complete wae in distance of 50 cm. The velocity of the wave is:

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54 cms^-1

60 cms^-1

750 cms^-1

1500 cms^-1

The force applied on the mass attached with a spring is represented by:

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F_a

F_c

F_ext

F_s

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 2

Remain the same

Be decreased by a factor of 2

Be decresaed by a facro of 4

The waves, which are used to detect the broken bones, are called:

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Light waves

x-rays

Sound waves

both b,c,

At extreme position potential energy of the pendulum is

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Maximum

Miimum

a and b

zero

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