Q. Which one is correct regarding the ear and hearing?
A) The range of human hearing is from 20 Hz to 20 kHz
B) Conductive hearing loss would be evident if a person had a similar degree of hearing loss for air conduction and bone conduction
C) The ear is most sensitive to frequencies between about 100 Hz and 300 Hz
D) The endolymph of the scala media is similar in composition to plasma
Explanation
If air conduction and bone conduction showed a similar degree of hearing loss, the subject would have sensorineural hearing loss. The ear is most sensitive to frequencies between 1 kHz and 3 kHz. The endolymph is not an ultrafiltrate of plasma but is rich in potassium and low in sodium.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.