Tag: physics

Questions Related to physics

Which of the following will produce sound through vibration.

physics sound sound is produced by a vibrating body propagation of sound production and propagation of sound

  1. A plastic scale when bent over the edge of a bench

  2. Saying 'Ah' for few seconds

  3. Plucking a rubber string by fingers

  4. All of the above

Show answer
Correct Option: D
Explanation:

All vibration produces sound. In some cases vibrations are visible to our naked eyes but Observe that sound is produced by vibration in some cases they can only be felt not seen. In all the above activities sound can be produced.

Sound waves are mechanical waves.

physics sound sound is produced by a vibrating body propagation of sound production and propagation of sound

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

yes, sound waves are mechanical waves.

so the answer is A.

Vibrating bodies produce ........

physics sound sound is produced by a vibrating body propagation of sound production and propagation of sound

  1. Sound

  2. Heat

  3. Light

  4. None of these

Show answer
Correct Option: A
Explanation:

all vibrating bodies produce sound

so the answer is A.

Which of the following instrument is not a percussion instrument?

physics world of sounds sound is produced by a vibrating body propagation of sound production and propagation of sound

  1. Mri dangam

  2. Dholak

  3. Ghatam

  4. Tabla

Show answer
Correct Option: C
Explanation:

Ghatam is not a percussion instrument, whereas it is a ghana vadya.

The waves that transfer vibrations and disturbance are

physics sound sound is produced by a vibrating body propagation of sound production and propagation of sound

  1. Sound waves

  2. Light waves

  3. Infrared waves

  4. Ultrasonic waves

Show answer
Correct Option: A
Explanation:

Sound is a form of energy produced and transmitted by vibrating matter. Sound travels in waves. When sound moves through matter (solid, liquid, or a gas), the molecules of the matter move backward and forward in the direction in which the wave is travelling. This movement is called a vibration. Sound travels more quickly through solids than through liquids and gases because the molecules of a solid are closer together. Sound travels the lowest through gases because the molecules of a gas are farthest apart. In a vacuum sound cannot travel because there is no matter for it to move through.
Hence, the sound waves transfer vibrations or disturbance to produce sound.

A to and fro motion by an object is also called 

physics sound sound is produced by a vibrating body propagation of sound production and propagation of sound

  1. periodic motion

  2. oscillatory motion

  3. cyclic motion

  4. none of these

Show answer
Correct Option: B
Explanation:

    Periodic motion is defined as the motion which is repeated identically after a fixed interval of time , to and fro motion is not necessary here .

    Oscillatory motion is that motion in which body moves to and fro about a fixed point in a fixed interval of time .
    In a cyclic motion , body returns at its initial position after a time .

Sound is produced in a bamboo flute because:

physics sound sound is produced by a vibrating body propagation of sound production and propagation of sound

  1. air starts vibrating

  2. bamboo starts vibrating

  3. air hits the bamboo

  4. direction of air is changed

Show answer
Correct Option: A
Explanation:

   When we put air in a bamboo flute by our mouth , we give energy to the air inside the flute and air inside the bamboo flute starts vibrating and we get a sweet sound .

The membrane of a drum vibrates to produce sound. Similarly the string of a sitarvibrates to produce sound. Based on these two examples answer the following question. Which part of a whistle vibrates to produce sound?

physics world of sounds sound is produced by a vibrating body propagation of sound production and propagation of sound

  1. body of whistle

  2. air

  3. mouth of the person

  4. all ofthe above

Show answer
Correct Option: B
Explanation:

The vibrations produced in the air while blowing a whistle, produces sound.

In Dholak sound produce due to which of the following?

physics world of sounds sound is produced by a vibrating body propagation of sound production and propagation of sound

  1. Stretched membrane  

  2. Stretched strings

  3. Vibration of  air

  4. Air column 

Show answer
Correct Option: A
Explanation:

When the sticks hit on the surface of the membrane, the membrane vibrates and results in the production of sounds.

So answer is A

What do you think a tabla player does to increase the pitch of the sound produced?

physics world of sounds sound is produced by a vibrating body propagation of sound production and propagation of sound

  1. He strikes the table skin harder.

  2. The pitch cannot be changed in a table.

  3. He tightens the skin by stretching the string around it.

  4. He gets a bigger tabla.

Show answer
Correct Option: C
Explanation:

Answer is C.

The top of the tabla drum is covered with a stretched, layered leather membrane held in place by leather braces. The wooden pegs between the braces and the drum adjust the tension in the braces, thus controlling the pitch of the instrument.
Hence, to increase the pitch of the sound produced the player tightens the skin by stretching the string around it.