Tag: physics

Questions Related to physics

The response of human ear to sound in terms of its shrillness is known as:

how humans hear sound human ear study of sound sound physics

  1. frequency

  2. pitch

  3. loudness

  4. amplitude

Show answer
Correct Option: B
Explanation:

Pitch is known as the response of human ear to sound in terms of its shrillness.

Why can't we hear the scream of bat?

how humans hear sound human ear study of sound sound physics

  1. Because its scream consists of infrasonic sound

  2. Because its scream consists of ultrasonic sound

  3. Because its scream consists of subsonic sound

  4. None of these

Show answer
Correct Option: B
Explanation:

Bats produce ultrasonic sound and thus humans cannot hear them. Bats emit sound in the range of $20,000$ to $100,000\ Hz$ which is beyond our audible range.

What is conductive hearing loss?

how humans hear sound human ear study of sound sound physics

  1. When outer or middle ear leads to problem and inefficient transfer of sound

  2. When inner ear leads to problem and inefficient transfer of sound

  3. When only middle ear leads to problem and inefficient transfer of sound

  4. When inner and middle ear leads to problem and inefficient transfer of sound

Show answer
Correct Option: A
Explanation:

When outer or middle ear gets damage causing insufficient transfer of sound to inner ear.

Which of the following is / are true?

how humans hear sound human ear study of sound sound physics

  1. the inner ear consists of a cochlea, the semicircular canals and the auditory nerve

  2. the middle ear is an air filled cavity that consists of an ear drum and three tiny interconnected bones the hammer, anvil and stirrup

  3. the human ear consists of three basic parts - outer ear, middle ear and inner ear

  4. all of these

Show answer
Correct Option: D
Explanation:

All of the options are correct.

The inner ear consists of a cochlea, the semicircular canals and the auditory nerve.
The middle ear is an air filled cavity that consists of an ear drum and three tiny interconnected bones the hammer, anvil and stirrup.
The human ear consists of three basic parts - outer ear, middle ear and inner ear.

How many inner and outer hair cells does a normal human ear possess?

how humans hear sound human ear study of sound sound physics

  1. 25000

  2. 30000

  3. 27000

  4. 50000

Show answer
Correct Option: A
Explanation:

A normal human ear possess nearly 25000 hair cells.

State whether given statement is True or False :
There is no possibility of having mixed hearing loss with both conductive and sensori-neural element.

how humans hear sound human ear study of sound sound physics

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

It is a false statement. It is possible to have a mixed hearing loss.

Why do we lose hearing while yawning?

how humans hear sound human ear study of sound sound physics

  1. Muscles around middle ear contracts

  2. Muscles around middle ear expands

  3. Muscles around inner ear contracts

  4. Muscles around inner ear expands

Show answer
Correct Option: A
Explanation:

Muscles around middle ear contracts while yawning. So, we are not able to hear while yawning.

How does the sound produced by a vibrating object in a medium reach your ear?

how humans hear sound human ear study of sound sound physics

  1. Through electron transfer

  2. Through the vibration of particles

  3. Sound waves don't need a medium

  4. Not enough data

Show answer
Correct Option: B
Explanation:

When an object vibrates, it vibrates the neighbouring particles of the medium. These vibrating particles then vibrate to the adjacent particles. Vibrations in an object create disturbance in the medium and consequently compressions and rarefactions.  In this way, vibrations produced by an object are transferred from one particle to another in the form of compressions and rarefactions till it reaches our ear.
Region of high pressure and high density is called compression and region of low pressure and low density in the air is called rarefaction. As the object continues to vibrate, it produces a series of successive compression and rarefaction in the air, thus, propagating sound through the air and finally reaches our ears.

The persistence of hearing for human beings is not more than

how humans hear sound human ear study of sound sound physics

  1. 1 s

  2. $\displaystyle \frac{1}{5}:s$

  3. $\displaystyle \frac{1}{10}:s$

  4. $\displaystyle \frac{1}{2}:s$

Show answer
Correct Option: C
Explanation:

The sensation of hearing of any sound persists in our brain for 0.1s.This is called the persistence of hearing.

so the answer is C.

Calculate he minimum distance to hear an echo.(taking the velocity of sound in air to be $330 {ms}^{-1}$)

how humans hear sound human ear study of sound sound physics

  1. 12.8 m

  2. 24 m

  3. 8.6 m

  4. 17.5 m

Show answer
Correct Option: D