Question

Range of human hearing is
A) 20400 Hz
B) 100 - 1000 Hz
C) 20 - 20000 Hz
D) 1000 - 15000 Hz

Answer 1

Hint:Hearing is the ability of perceiving sounds by an organ such as the ear. Sound can be heard via solid, gaseous or liquid matter.

Complete answer:
Let us analyse the options to find the correct answer.

Option A: Anything above 20, 000 Hz is harmful to the human ear. Therefore, this is the incorrect option.
Option B: Humans can hear upto 20,000 Hz, therefore, this is the incorrect option.
Option C: The normal range of hearing is 20-20,000 Hz, therefore, this is the correct option. Humans use their ears to hear. The ear generally picks up the sound waves and vibrations present in the environment, but is able to hear only those frequencies which are between 20 - 20,000 Hz. Hertz is defined as the number of vibrations which are produced per second and is denoted by Hz.
Option D: The upper limit for hearing is 20,000 Hz and not 15000 Hz and the lower limit for hearing is 100 Hz and not 1000 Hz. Therefore, this is the incorrect option.

Thus, the correct option is (C) 20 - 20000 Hz.

Note:Ear is the structure that helps in hearing. The ear has three main parts,
The outer ear - It receives the sounds.
The middle ear - It amplifies the sound and then transmits to the inner ear.
The inner ear - It has cochlea which is the auditory organ.