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Sound



mcqs by everyone

Loudness of sound varies directly with vibrating body's


Sound and light waves both


Speed of sound can be found by relation


A safe level of noise depends on


Sound waves can be transmitted by any


Technique or method to absorb undesirable sounds by soft and porous surface is called


Wavelength of ultrasonic waves is


Sound energy passing per second through a unit area held perpendicular to direction of propagation of sound waves is called


Unit of wavelength is __________


When a wave travels through a medium ______


Frequency range for ultrasound is


As compare to air, speed of sound in liquids and solids is


Which of the following quantities is transferred during wave propagation


SI Unit of time period is __________


Frequency of tuning fork depends on


Voice box or larynx of human process


Speed of sound in liquid is


Area and loudness are


Which of the following will remain unchanged when a sound wave travels in air or in water


Bats can hear frequencies up to


Which part of human ear converts sound vibrations into electrical signals


Sound produced by a large drum is louder than a small drum because of its


A human hear can not hear a sound of frequency less than


Sound waves are mechanical in nature because


A sound source sends waves of 400 Hz. It produces waves of wavelength 2.5 m. The velocity of sound waves is


To find speed of sound, we use relation


Sounds of frequency higher than 20,000 Hz which are inaudible to normal human ear are called


A normal human ear can hear a sound only if its frequency lies between


Speed of sound depends upon


An example for mechanical wave