Q6 of 18 Page 165

Extremely loud sound can make one deaf. Suggest some measures to check loud noise.

One can measure the loudness of noise by using a decibel meter. This instrument will tell us the given source of sound is harmful to our ears or not. decibel is the unit of intensity of sound.

Nowadays it is possible to measure the same using computers, and smartphones.


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6

Suggest some measures to reduce noise pollution in your residential area.

 6

Your parents are going to buy a new house. They have been offered one on the roadside and another two lanes away from the roadside. Which house would you suggest your parents? List out the ways and means to reduce noise.

 6

Factories should not be constructed in the residential areas. Do you agree or not? If so, why?

 6

If Raman fixed two mirrors at an angle of 60 degrees to get as many number of images, could you find out the exact number of images produced? (N = 360/angle -1).