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प्रश्न
Explain the Term: Decibel
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उत्तर
The unit to measure sound is called decibel.
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संबंधित प्रश्न
Noise pollution may cause partial hearing impairment.
Explain in what way noise pollution is harmful to humans.
What is the safe limit of sound level in dB for our ears?
Look at a cartoonist's presentation of a kind of pollution given below.
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- List the sources of pollution.
- Mention any two harmful effects of this pollution.
Which of the following problems is not created by noise pollution?
What should we do?
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With reference to noise pollution, answer the following:
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