Question

The range of normal human hearing is in the ranges of-
A.10 Hz to 80 Hz
B.50 Hz to 80 Hz
C.50 Hz to 15000 Hz
D.15000 Hz and above.

Answer 1

Hearing comes under the five senses of an individual and the sense organ responsible for this is our Ears. The ears perform two sensory functions, one of which is hearing and the other is the maintenance of the balance of the body. The ear can be anatomically divided into three major sections- the outer ear, middle ear, and inner ear. The main hearing function is performed by the inner ear.

Complete answer: The outer ear consists of the external auditory meatus which is also called the ear canal and ear pinna. Pinna collects sound vibrations from the surrounding. The ear canal transmits it to the tympanic membrane. The tympanic membrane has connective tissues which are covered with skin on the outside and with mucus membrane on the inside.
The middle ear has three ear ossicles malleus, incus, and stapes; their main function is the amplification of sound vibrations which increases the efficiency of transmission of sound waves to the inner ear.
The inner ear is fluid-filled, called labyrinth having two parts bony and membranous labyrinth. The coiled portion of this labyrinth is the cochlea which is the main hearing organ.
The range of normal human hearing is 50 Hz to 15000 Hz; the correct answer is option C.

Note: Generally we say that humans can detect sounds ranging between 20 Hz to 20,000 Hz. Sounds above 20 kHz are called ultrasound and those below 20 Hz are called infrasound. After the sound waves reach the inner ear the cochlear nerves through the bending action of the hair cells present there transmit the impulse to the auditory nerve and it is then transferred to the temporal region of the brain.