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Sound

Question
CBSEENSC8005730
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Lightening and thunder take place in the sky at the same time and at the same distance from us. Lightening is seen earlier and thunder is heard later. Can you explain?

Solution

Though lightening and thunder take place at the same time, we see light earlier than hearing the sound because light travels faster than sound. 

Some More Questions From Sound Chapter

Choose the correct answer : Sound can travel through

Voice of which of the following is likely to have minimum frequency:

State True or false:

Sound cannot travel in vacuum.

In the following statements, tick ‘T’ against those which are true, and ‘F’ against those which are false :

State True or False:

If the amplitude of vibration is large, sound is feeble.

For human ears, the audible range is 20 Hz to 20,000 Hz.

State True or False:

The lower the frequency of vibration, the higher is the pitch.

State True or False: 

Unwanted or unpleasant sound is termed as music.

State True or False:

Noise pollution may cause partial hearing impairment.

Time taken by an object to complete one oscillation is called __________.

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