Question # 1

Which of the following features is the height of the wave from the rest position or mid line.

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Frequency

Wavelength

Amplitude

Pitch

The wavelength of red colour is.

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700 nm

800 nm

900 nm

600 nm

An object produce a sound with a frequency of 50 Hz. Find its tiem period.

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0.01 sec

0.03 sec

0.02 sec

0.04 sec

Which of the followig features of a wave is the number of waves that pass by each second.

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Loudness

Amplitude

Frequncy

Wave speed

What is transferred by teh movement of waves.

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matter

energy

both a and b

None of these

What type of wave does not need matter to travel through.

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Mechaical

Electromagnetic

Sound

Transverse

Which have audible range for 2 kHz and 110 kHz.

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Human

Owl

Bat

Dolphin

The lowest pointof a wave is................

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Crest

Amplitude

Peak

Trough

Dolphins can hear sound underwater from up to ............ away

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15 km

20 km

25 km

30 km

Speed of sound in water is

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1000 ms-1

1500 ms-1

900 ms-1

2000 ms-1

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