Sound (radiation physics)

Speed of sound is the greatest in........

• Air

• Water

• Glass

• Glycerin

The instruments which uses sound waves to measure the depth of ocean is

• Radar

• Sonar

• Altimeter

• None

What kind of waves are sound waves?

• Electromagnetic wave

• Mechanical wave

• Radiation wave

• None

Light wave is an example of...

• Longitudinal wave

• Transverse wave

• Electromagnetic wave

• All of above

Pitch of high frequency of sound is.....

• High

• Low

• Zero

• None of above

The velocity of sound in air....

• Decrease with increase of temperature

• Increases with decreases of temperature

• Decreases with decreases of temperature

• None

The sounds having a frequency of 20 Hz to 20kHz are known as

• Ultrasound

• Infrasound

• Audible sound

• None

The loudness of sond depends upon.............

• Frequency

• Pitch

• Wavelength

• Amplitude

The acronym SONAR stands for

• Sound navigation and ranging

• Sound nodation and ranging

• Sound narration of ranging

• None

Which part of human ear collects sound from the surroundings.

• Hammer

• Pinna

• Cochlea

• None