Tag: production and propagation of sound

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Questions Related to production and propagation of sound

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

The waves that transfer vibrations and disturbance are

  1. Sound waves

  2. Light waves

  3. Infrared waves

  4. Ultrasonic waves
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

A to and fro motion by an object is also called 

  1. periodic motion

  2. oscillatory motion

  3. cyclic motion

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
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 .

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

Sound is produced in a bamboo flute because:

  1. air starts vibrating

  2. bamboo starts vibrating

  3. air hits the bamboo

  4. direction of air is changed
Reveal answer Fill a bubble to check yourself
A Correct answer
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 .

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

  1. body of whistle

  2. air

  3. mouth of the person

  4. all ofthe above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

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

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

  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.
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

The part of the violin which vibrates while playing it is :

  1. the wire

  2. the box of the violin

  3. both the wire and the box

  4. none of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In a violin, the strings (wires) vibrate when played, and these vibrations are amplified by the hollow wooden body (the box). Both components are essential for producing the sound.

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

When a glass filled with water is struck with a stick, ripples are produced in the water. This indicates that

  1. the glass is not vibrating.

  2. the glass may or may not be vibrating.

  3. the glass is vibrating.

  4. none of the above is true.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When a glass filled with water is struck with a stick, it vibrates and this vibration creates ripples in the water. These ripples prove that the glass vibrates. Also, a sound is produced due to the vibration of the glass.