Tag: sound: production of sound

Quizzes (4) Questions (118)

Questions Related to sound: production of sound

Multiple choice physics sound: production of sound oscillation - amplitude, time period and frequency of oscillation time period, frequency and amplitude of sound oscillatory and periodic motion

State whether true or false.
All periodic motion need not be oscillatory but all oscillatory motions
are periodic.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Any motion that repeats itself at regular intervals of time is periodic in
nature (e.g., motion of a planet around the sun) but it is not necessarily
oscillatory But all oscillatory motions undergo periodic repetitions hence 
are always periodic

Multiple choice physics sound: production of sound oscillation - amplitude, time period and frequency of oscillation time period, frequency and amplitude of sound oscillatory and periodic motion

If a body moves back and forth repeatedly about a mean position, it is said to possess 

  1. rotatory motion

  2. projectile motion

  3. oscillatory motion

  4. Reciprocating motion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Oscillation is the process of swinging or moving to and fro in a steady, uninterrupted manner, and oscillatory motion is the movement created by the process.

Multiple choice physics sound: production of sound oscillation - amplitude, time period and frequency of oscillation time period, frequency and amplitude of sound oscillatory and periodic motion

In the equations below, A, B, $\omega$ and $\phi$ are constants; $y$ and $t$ are variables; $t$ represents time. Only one of the following equations does not represent SHM. Which one is that?

  1. $y= A sin \omega t$

  2. $y= B cos \omega t$

  3. $y= A sin \omega t + B cos \omega t$

  4. $y= A sin \omega t + B cos (2\omega t)$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A linear combination of coherent simple harmonic motions would result in another simple harmonic motion.

But the combination of two incoherent simple harmonic motions($Asin\omega t,B cos(2\omega t)$) is NOT an SHM.
Hence the answer is option D.

Multiple choice physics sound: production of sound oscillation - amplitude, time period and frequency of oscillation time period, frequency and amplitude of sound oscillatory and periodic motion

Which of the following is not an oscillatory motion?

  1. The tuning fork

  2. The stretched string

  3. The motion of the swing

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Oscillation is a motion in which a body moves back and forth repeatedly about a mean position. Since in all the first 3 options, the motion is oscillatory, the correct option is 'None of these'.

Multiple choice physics sound: production of sound oscillation - amplitude, time period and frequency of oscillation time period, frequency and amplitude of sound oscillatory and periodic motion

Swinging of table fan is an example of which type of motion?

  1. Oscillatory motion

  2. One dimenetional motion

  3. Projectile motion

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Any motion in which the body moves to and fro repeatedly is known as oscillation. A table fan swings with a specific time period and constantly moves to and fro.  Hence it is oscillatory motion

Multiple choice physics sound: production of sound oscillation - amplitude, time period and frequency of oscillation time period, frequency and amplitude of sound oscillatory and periodic motion

Which of the following is/are not periodic motion?

  1. The motion of the bob of the simple pendulum

  2. Motion of a bouncing ball under the action of gravity and friction

  3. Motion of a planet around the sun

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A periodic motion is the one which repeats itself at fixed intervals of time.

A bouncing ball doesn't bounce to the same height everytime. Hence we can't say that the motion is repeating.

Multiple choice physics sound: production of sound oscillation - amplitude, time period and frequency of oscillation time period, frequency and amplitude of sound oscillatory and periodic motion

Displacement-time graph depicting an oscillatory motion is

  1. cos curve

  2. sine curve

  3. tangent curve

  4. straight line
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The equation for displacement in oscillation is $x=A\sin(\omega t+\alpha)$

Since $x$ is a sine function of time, the graph is sinusoidal in nature.

Multiple choice physics sound: production of sound oscillation - amplitude, time period and frequency of oscillation time period, frequency and amplitude of sound oscillatory and periodic motion

Uniform circular motion can also be represented by a simple harmonic oscillator.
State whether given statement is True/False?

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The above statement is true as we can represent uniform circular motion by simple harmonic oscillator.

Multiple choice physics sound: production of sound oscillation - amplitude, time period and frequency of oscillation time period, frequency and amplitude of sound oscillatory and periodic motion

The bye-bye gesture, we do using hands is an example of 

  1. Periodic motion

  2. Oscillatory motion

  3. Linear motion

  4. Circular motion
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The motion of the hand is an oscillatory motion, as the motion repeats in a finite interval of time and the to and fro motion happens in a given time period

As the hand moves to one extreme, a restoring force acts in the opposite direction to move it back to the mean and then to the other extreme position. Thus, the bye-bye gesture of the hand is an oscillating motion


The correct option is (b)