Sound Chapter X

if the medium particles vibrates perpendicular to the direction of propogation of the wave is called as :

• Longitudenal Waves

• Transverse Waves

• Electromagnetic Waves

What is the speed of sound in Air at 18^OC:

• 342 m/s

• 330 m/s

• 341 m/s

Calculate the distance required to produce echo in Water?

Hint: (speed of sound in water is 1400 m/s)

• 17 m/s

• 70 m/s

• 170 m/s

The Frequeny in Free Vibration is :

• Constant

• decreased

• increased

What is the relation between frequency and accleration due to gravity in terms with Natural Vibration ?

The periodic vibration of a body in the absence of ________ force on it, are called natural vibration

• any frictional

• restoring

• magnetic

• 450 m

• 175 m

• 510 m

a) The Periodic vibration of a body in vacume is caused by : b) Does the energy remain ____?

• a) Restoring Force

  b) Energy dissipated

• a) Frictional Force

  b) No loss of Energy

• a) Restoring Force

  b) No loss of energy

What is range of human audibility ?

• 20Hz to 20,000KHz

• 20Hz to 20KHz

• Above 20 Hz