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