Question

27. What is noise?
a) Desirable sound
b) Desirable and unwanted sound
c) Undesirable and unwanted sound
d) Undesirable and wanted sound​

Answer 1

Answer:

(c) Undesirable and unwanted sound.

Explanation:

UNDESIRABLE:-not wanted or desirable because harmful, objectionable, or unpleasant.

UNWANTED SOUND:-Noise is unwanted sound considered unpleasant, loud or disruptive to hearing.

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Answer 2

Noise is undesirable and unwanted sound(option c)

• It is an unpleasant sound that is disruptive to hearing.
• Just like sound noise is also formed by the vibration through a medium.
• The level of sound is measured in decibels(dB).
• The sound level at a range of 80db or above 80dB is considered as noise
• Noise can cause serious hearing problems, tension, increase in blood pressure
• Basically there are four types of noise.
• They are physical, physiological, psychological, and semantic.
• The most common health problem caused during noise is Noise-Induced Hearing Loss(NIHL).
• Increase in noise not only affect the humans and wild in the land it also affects the water beings also