Clothes and paper ..................(reflect/absorb) sound.

Fluffy materials ....................... (absorb/reflect) sound.

The sound heard after reflection is............

A person standing at a distance of 6 m from a source of sound receives sound wave in two ways, one directly from the source and other after reflection from a rigid boundary as shown in the figure. The maximum wavelength for which, the person will receive maximum sound intensity, is

A man standing 25 m away from a wall produces a sound and receives the reflected sound. Calculate the time after which he receives the reflected sound if the speed of sound in air is 350ms^(-1) .

A man standing 25 m away from a wall produces a sound and receives the reflected sound. Calculate the time after which he receives the reflected sound if the speed of sound in air is 350 m s^(-1) .

Which compound now-a-days is used to bleach clothes and papers to promote green chemistry in day-to-day life

A body is kept inside a container the temperature of the body is T_(1) and the temperature of the container is T_(2) the rate at which body absorbs the energy is alpha The emissivity of the body is The radiation striking the body is either absorbed or reflected A good absorber is .

A man standing 25 m away from a wall produces a sound and receives the reflected sound. Will the man be able to hear a distinct echo ? Give a reason for your answer.

Statement given below is incorrect. Write the correct statement. In order to produce an echo, the minimum distance between the source of sound and the reflecting body should be 14 m.

Name three different materials which absorb sound.