Question

Assertion (A): The tube/canal which transmits the air currents from the pinna to tympanum is termed as eustachian tube.

Reason (R): The eustachian tube equalizes the air pressure on either side of the ear drum allowing it to vibrate freely.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

Options

• (1)

• (2)

• (3)

• (4)

Answer 1

(2)

Explanation:

The canal that carries sound waves from the pinna to the eardrum is the auditory canal (external auditory meatus), not the eustachian tube. Therefore, the Assertion (A) is false.

The eustachian tube connects the middle ear with the throat and helps equalize air pressure on both sides of the eardrum, allowing it to vibrate properly. Therefore, the Reason (R) is true.

Hence, A is false and R is true.