Q.21)-When we hear a sound, we can identify its source from
  • Wavelength of sound
  • The overtones present in the sound
  • The intensity of sound
  • The amplitude of sound
Q.22)-Which of the following type of waves is different from others?
  • Light waves
  • X-rays
  • Radio waves
  • Sound waves
Q.23)-Quality is that sensation of sound which is felt by our ears by virtue of
  • Waveform of sound wave
  • Frequency of sound water
  • Amplitude of sound wave
  • None of these
Q.24)-Beats occur because of
  • Intereference
  • Reflection
  • Refraction
  • Doppler effect
Q.25)-The loudness of sound depends upon
  • Velocity
  • Pitch
  • Amplitude
  • Wavelength
Q.26)-Pitch is sensation which depends upon
  • Frequency
  • Amplitude
  • Wavelength
  • Velocity
Q.27)-The quality of sound produced by an instrument depends on the
  • Frequency
  • Intensity
  • Number of overtones
  • None of these
Q.28)-Sound waves of wavelength greater than that of audible sound are called.
  • Infrasonic waves
  • Ultrasonic wave
  • Sonic wave
  • Seismic waves
Q.29)-If a sound travels from air to water, the quantity that remain unchanged is
  • Velocity
  • Frequency
  • Wavelength
  • Amplitude
Q.30)-Ultrasonic waves can be detected by
  • Telephone
  • Hebb's method
  • Kundt's tube
  • Qunicke's tude