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Assertion (A) : Inhabitants close to ver...

Assertion (A) : Inhabitants close to very busy airports are likely to experience health hazards.
Reason (R) : Sound level of jet aeroplanes usually exceeds 160 dB.

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
A
Noise level up to 64 dB (decibel) is well tolerated. Prolonged exposure to noise level to 80 dB or more leads to loss of hearing ability, fatigue, nervousness, fever, hypertension, gastric disorder, increase in cholesterol level and dilation of pupil of the eye. As the jet aeroplanes have the noise up to 150-160 dB, the inhabitants in the vicinity of busy airports are likely to experience above health hazards. Maximum noise level is recorded in rockets, i.e., 180 dB.
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Knowledge Check

  • Consider the following statements and select the correct code. Assertion (A) : A jet aircraft moving at Mach Number equal to 1 travels faster at an altitude of 15 km than while moving at Mach Number equal to 1 near the sea level. Reason (R) : The velocity of sound depends on the temperature of the surrounding medium.

    A
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    B
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    C
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    D
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