Question # 1

The velocity of sound will be greater in.

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Air

Water

Solids

Vacuum

A cork moes at 5 m s-1 on the crest of a wave The distance between the crests is 10 m. The frequency of the wave motion is.

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0.5 Hz

1.0 Hz

2.0 Hz

5.0 Hz

Which effect explain the frequency shift that occurs when there is motion sound a listener or both relative to the medium.

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Early effect

Doppler's effect

Hall effect

Zeeman effect

X -rays are similar in nature to.

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Alpha particles

Beta particles

Gama rays

Photons

A thin layer of oil the surface of water looks coloured due to.

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Pillarization of light

Different elements present in the oil

Interference of light

Transmission of light

Mostly widely used types of gas LASER are.

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Neon

Argon ion

Helium

All of these

Huygen's wave theory falls to explain

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Diffraction

polarization

Interference

Refraction

When wind blows in the same direction in which the sound travels, the sound velocity

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Decreases

Increases

Remains unchanged

Becomes zero

The light rays which combine destructively would mean that resultant

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Intensity increases

Intensity decreases

Amplitude increases

Amplitude decreases

A stretched wire with clamped ends has a fundamental frequency of 1,000 Hz. What will be the new fundamental frequency if tension in the wire is increased by 2%

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980 Hz

1,000 Hz

1,010 Hz

1,020 Hz

Which of the title for combining of notes that produce jarring effect on the ear.

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Noise

Melody

Harmony

Discord

If a wave vibrate 10 times in 1 s with a speed of 10 m s-1 the correct wavelength of the wave is.

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1 m

10 m

20 m

100 m

The fact that the edge of a shadow formed by a point source of light shining on an object is not sharp is an example of.

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Refraction

Diffraction

Polarization

Dispersion

Which of the following is a transverse wave.

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Sound wave

Shock wave

Hair wave

Radiowave

A longitudinal sinusoidal wave has a wavelength of 1 cm and a period of 2s. Its wave velocity is.

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50 cm s-1

0.00t m s-1

100 cm s-1

5 m s-1

What will be the effect on the speed of a Transerv wave in a string. If tension is made 4 times.

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Remains the same

Increase a times

Becomes double

Becomes 3 times

The ripple tank is used to study various features of

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Wave phenomenon

Interferences

Doppler's effect

Reverberation

The energy transmitted per second though unit are held perpendicular to the direction of propagation of the wave is called.

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Intensity of sound

Pitch of sound

Loudness of sound

Quality of sound

A water wave is an example of

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Electromagnetic wave

Longitudinal wave

Transverse wave

Reverberation

Two light waves which are not coherent cannot produce.

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Interference

Diffraction

Reflection

Dispersion

Which of the following devices can be used to produce both transvers and longitudinal waves.

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A string

A ripple tank

a helical spring

A turning fork

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