Question # 1

The state of human blood flow can be found by using.

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Newton's formula of speed of sound

Interference of sound

Phenomena of beats

Doppler's effect of sound

In stationary waves the points which always remain at rest are.

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Nodes

Antinodes

Crest

Trough

Crests and trough are formed in.

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Longitudinal waves

transverse waves

Stationary waves

Compression waves

The speed of sound in air would become double than ots speed at 10^oC at a temperature of.

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313 ^oC

586 ^oC

859^oC

899 ^oC

The distance between two consecutive crest is called.

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Displacement

Amplitude

Wave front

Wavelength

The portion of the wave above mean level is called.

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Node

Antinode

Crest

Trough

A stretched string 2 m long and it has 2 hopes of stationary waves hen the wavelength is

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4 m

2 m

3 m

1 m

When two waves having same frequency traveling in same direction combine, phenomenon is called

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Wave motion

Combination of waves

Interference

Diffraction

A stationary waves is established din a string which vibrates in four segments at a frequency of 120 Hz, Its fundamental frequency is.

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15 Hz

30 HZ

60 Hz

480 Hz

When two identical travelling waves are superimposed, velocity of resultant wave.

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Decreases

Increases

Remain same

Becomes zero

Half wavelength corresponds to

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0 ^o

90 ^o

180 ^o

360 ^o

Who did give the correct formula for the speed of sound in air?

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Boyle

Laplace

Newton

Einstein

Speed of sound in aluminum at 20 ^oC is.

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3600 m/s

5100 m/s

5130 m/s

3500 m/s

Stationary waves are generated on a string of high l, if tension is increased , frequency of vibration will

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Decrease

Unchanged

Half

Increases

Diffraction is a special type of

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Reflection

Polarization

Interference

Refraction

According to Newton, sound travels in air under conditions of.

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Adiabatic

Isothermal

Isobaric

Isochoric

Two tunign forks of frequencies 260 Hz and 256 Hz are sounded together , the number of beats per second is.

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2

258

516

4

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Physics ICS Part 1 Chapter 8 Online Test MCQs With Answers

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