Question # 1

If a stretched string 4 m long and it has 4 loops of stationary waves, then the wave length is.

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1m

2 m

3 m

4 m

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

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Adiabatic

Isothermal

Isobaric

Isochoric

Sound waves are

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Electromagnetic waves

Transverse waves

Compressional waves

Matter waves

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

The speed of sound in ari at 0 ^oC is 332 ms-1, Then the speed at 40 ^oC will be

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372 ms-1

356 ms-1

346 ms-1

332 ms-1

When ever the path difference between the waves is integral multiple of half the wavelength, interference will be

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Constructive

Destructive

(-)ve

(+) ve

In vibrating string, the points where the amplitude is maximum are called.

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Nodes

Antinodes

Troughs

Crests

In stationary waves, the velocity of particle at the node is.

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Maximum

Infinite

Zero

Varible

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

According to Newton's formula, the speed of sound in air at STP is

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332 ,ms-1

340 ms-1

350 ms-1

280 ms-1

the example of mechanical waves is

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Water waves

Infrared waves

Radio waves

Ultraviolet waves

Diffraction is a special type of

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Reflection

Polarization

Interference

Refraction

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

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Boyle

Laplace

Newton

Einstein

The mechanism of transports energy of all the waves is

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Different

Same

Complicated

Easy

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

In stationary waves, the particle velocity at nodes is

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Minimum

Maximum

Zero

Constant

The wavelength of fundamental note in one end closed pipe in term of length 'l' of pipe is.

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4 l

2l

l

1/4 l

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Physics Fsc Part 1 Chapter 8 Online Test MCQs With Answers

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