Question # 1

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 following animals can respond to lowest frequency.

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Cat

Cow

Dog

Dolphin

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

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Mechaical

Electromagnetic

Sound

Transverse

Wave are of .............. types.

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Two

Three

Four

Five

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

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Crest

Amplitude

Peak

Trough

Sound is a form of.

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Energy

Wave

Frequency

intensity

Sound cannot pass through.

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Solid

Liquid

Vacuum

Gasses

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

------------ waves are produced in stretched string.

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Longitudinal wave

Elecromagnetic wave

Transverse wave

None of these

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