A person speaking normally produces a sound intensity of `40 dB` at a distance of `1 m`. If the threshold intensity for reasonable audibility is `20 dB`, the maximum distance at which he can be heard cleary is.

A person speaking normally produces a sound intensity of 40dB at a distance of 1m. If the threshold intensity for reasonable audibility is 20dB, the maximum distance at which a person can be heard clearly is (2x) meter . Find the value of x.

A person speacking normally produces a sound intensity of 40dB AT A IDISTANCE OF 1M. If the threshold intensity for reasonable audiblity is 20dB, the maximum distance at which a person can be heard clearly is (2x) meter . Find the value of x.

At a distance of 5.0 m from a point sound source, the sound intensity level is 110 dB. At what distance is the intensity level 95 dB?

A person can throw a stone to a maximum height of h meter. The maximum distance to which he can throw the stone is:

A person can throw a stone to a maximum height of h meter. The maximum distance to which he can throw the stone is:

Airport authority has made the regulation that maximum allowable intensity level detected by a microphone situated at the end of 1630 m long runway can be 100 dB. An aeroplane when flying at a height of 200 m produces an intensity level of 100 dB on ground. while taking off, this aeroplane makes an angle of 30^@ with horizontal. Find the maximum distance this aeroplane can cover on the runway, so that the regulation are not violated (assume no reflection).

Airport authority has made the regulation that maximum allowable intensity level detected by a microphone situated at the end of 1630 m long runway can be 100 dB. An aeroplane when flying at a height of 200 m produces an intensity level of 100 dB on ground. while taking off, this aeroplane makes an angle of 30^@ with horizontal. Find the maximum distance this aeroplane can cover on the runway, so that the regulation are not violated (assume no reflection).

Airport authority has made the regulation that maximum allowable intensity level detected by a microphone situated at the end of 1630 m long runway can be 100 dB. An aeroplane when flying at a height of 200 m produces an intensity level of 100 dB on ground. while taking off, this aeroplane makes an angle of 30^@ with horizontal. Find the maximum distance this aeroplane can cover on the runway, so that the regulation are not violated (assume no reflection).