A brief exposure to 150 dB sound may

Hearing may be damaged by excessive noise. So our ear sometimes need protection from continuous loud sound. Hearing damage depends on the sound intensity level (decibel level) and the exposure time, and the exact combinations vary for different people. Normally, at 90 dB , it takes 8 hours or less for the damage to receptor nerves to occur. further, it is found that if the sound level is increased by 5 dB , the safe exposure limit is cut to half. (a) How long will it take for a sound of a very loud lawn mower (or a motorcycle) of 95 dB to damage the hearing ? (b) What is the nonstop exposure time for a 105 dB sound to damage the ear ? ( c) What should be done to protect the society from the danger of losing the divine gift of hearing power ?

Calculate how many times more intense is 90 dB sound compared to 40 dB sound?

Excessive exposure to sunlight may cause ___________ cancer.

Assertion : A brief expoosure to extremely high sound level, 150dB or more generated by take off of a jet plane or rocket, may damage ear drum or dislocate ear ossicles and permanently impair the hearing ability. Reason : In India, the Air (Prevention and Control of Pollution ) Act came into force in 1981, but was amended in 1987 to include noise as an air pollutant.

How many times more intense is a 60 dB sound than a 30 dB sound ?

How many times intense is 80 dB sound than a 20 dB sound?