The term "infrasonic" applied to sound refers to sound waves below -

Related MCQs

• Longitudinal waves and Transverse waves are types of -
• Lognitudinal waves and Transverse waves are types of -
• The instrument which uses sound waves to measure the depth of oceans is –
• Sound waves in air are             .
• Sound and light waves both               .
• Sound waves can be transmitted by any
• Sound waves are produced by -
• What are audible sound waves?
• The propagation of sound waves in a gas involves –
• Sound of frequency below 20 Hz is called             .