Mechanism of Hearing

Q.

When a drum is beaten, a sound is heard due to:

1. Heating of the membrane

2. Both heating and vibration of the membrane

3. Vibration of the membrane

4. Freezing of the membrane

Q. The function of the three small bones in middle ear is to:

1. Protect the ear
2. Enhance the vibrations reaching middle ear
3. Produce sound inside the ear
4. Produce hormones essential for hearing

Q.

What does it mean by amplified sound and also the meaning of 'interlocked bones in the ear amplify the sound that strikes the eardrum'?

Q.

Which of the following correctly represents the hearing path in humans?

1. sound vibrations > pinna > eardrum > cochlea > sound amplification > electrical signal > brain

2. sound vibrations > pinna > eardrum > electrical signal > cochlea > sound amplification > brain

3. sound vibrations > pinna > sound amplification > eardrum > cochlea > electrical signal > brain

4. sound vibrations > pinna > eardrum > sound amplification > cochlea > electrical signal > brain

Q. Sound waves are amplified by the tiny bones present in the

1. outer ear
2. middle ear
3. inner ear
4. brain

Q.

What does the ear do?

1. Collects the sound from the surrounding

2. Converts pressure variations in the air with audible frequency into electrical signals

3. Converts pressure variations in the air with audible frequency into the mechanical signal

4. Both A and B

Q.

Which of the following correctly represents the hearing path in humans?

1. sound vibrations > pinna > eardrum > sound amplification > cochlea > electrical signal > brain

2. sound vibrations > pinna > eardrum > cochlea > sound amplification > electrical signal > brain

3. sound vibrations > pinna > eardrum > electrical signal > cochlea > sound amplification > brain

4. sound vibrations > pinna > sound amplification > eardrum > cochlea > electrical signal > brain

Q. Which part of the human ear is shaped like a funnel?

1. Ear canal
2. Pinna
3. Ear drum
4. Cochlea

Q. What is the function of cochlea in a human ear?

1. It amplifies vibrations reaching the middle ear.
2. It directs sound waves into the ear canal.
3. It protects the ear from damage.
4. It converts ear drum vibrations into electrical impulses.

Q. Which of the following consists of a thin membrane in the ear that starts vibrating on receiving sound waves?

1. Pinna
2. Eardrum
3. Ear canal
4. Cochlea

Q. The time in which sound travels to the two ears is always the same.

1. True
2. False

Q.

The main reason why we have two ears is:

1. to determine the direction from which sound is coming

2. to improve the quality of sound

3. to serve as a backup if one ear is damaged

4. to increase pitch of sound

Q. Which of the following consists of a thin membrane in the ear that starts vibrating on receiving sound waves?

1. Ear canal
2. Pinna
3. Eardrum
4. Cochlea

Q. Which part of the human ear converts sound waves into electrical impulses?

1. Anvil
2. Hammer
3. Cochlea
4. Stirrup