Tag: sound

Quizzes (27) Questions (116)

Questions Related to sound

Multiple choice physics sound sound as a wave of disturbance vibrations in a tuning fork vibrations in tuning fork

The type of waves that can be propagated in solids are :

  1. Longitudinal

  2. Transverse

  3. both

  4. None
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mechanical waves (longitudinal waves and transverse waves) are waves which propagate through a material medium (solid, liquid or gas) at a wave speed which depends on the elastic and inertial properties of that medium. 
The transverse waves depends on the rigidity of the medium hence, can propagate through solid and liquid medium but not through gases.
The longitudinal waves depends on resistance to compression or volume elasticity of the medium hence, can propagate through solid, liquid and gases.

Multiple choice physics sound sound as a wave of disturbance vibrations in a tuning fork vibrations in tuning fork

A rope length $\displaystyle l$ and mass $\displaystyle m$ hanges freely from the ceiling. The velocity of transverse wave as a function of position $\displaystyle x$ along the rope is proportional to

  1. 1 / $\displaystyle \sqrt x$
  2. $\displaystyle \sqrt x$
  3. $\displaystyle x$
  4. $\displaystyle x^0$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$\text{Mass per unit length of rope} =\dfrac{m}{l}$
Mass of rope of length $x =\dfrac { m }{ l } x$
Tension, $T = \dfrac { m }{ l } xg$
Velocity, $v=\sqrt { \dfrac { T }{ m }  } =\sqrt { \dfrac { mgl }{ lm } x }$      which is directly proportional to $\sqrt { x } $

Multiple choice physics sound sound as a wave of disturbance vibrations in a tuning fork vibrations in tuning fork

When slinky is stretched out in a horizontal direction and first coils are vibrated horizontally then which waves are generated?

  1. Longitudinal Waves

  2. Transverse Waves

  3. Surface waves

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

Longitudinal Waves are generated when slinky is stretched out in a horizontal direction and first coils are vibrated horizontally 

Multiple choice physics sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

A longitudinal wave is a wave that consists of oscillations that are 

  1. perpendicular to the direction of wave propagation

  2. parallel to the direction of wave propagation

  3. radial to the direction of wave propagation

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

A longitudinal wave is a wave that consists of oscillations that are perpendicular to the direction of wave propagation

The correct option is (b)