The sound intensity at a point 4m from the point source is `20W/m^(2)` then the sound intensity at a distance 8m from the same source will be
1) `5W/m^(2)`
2) `10W/m^(2)`
3) `40W/m^(2) `
4) `2.5W/m^(2)`

The sound level at a point 5.0 m away from a point source is 40 dB. What will be the level at a point 50 m away from the source ?

The intensity of sound from a point source is 1.0 xx 10^-8 Wm^-2 , at a distance of 5.0 m from the source. What will be the intensity at a distance of 25 m from the source ?

The intensity of a wave emitted from a small source at a distance 10 m is 20 xx 10^(-3)"Wm"^(-2). What is the intensity at a distance 100 m ?

The intensity of sound from a radio at a distance of 2 metres from its speaker is 1xx10^(-2) mu W//m^(2) . The intensity at a distance of 10 meters would be

The sound intensity is 0.008W//m^( 2) at a distance of 10 m from an isotropic point source of sound. The power of the source is

The intensity of a point source emitting sound at distance 3 from the source is 0.707 W//m^2? What is the average power output of the source ?

The intensity of sound from a public loud speaker is 1mu "watt m"^(-2) at a distance of 5 m. What is the intensity at a distance of 100 m ?

Loudness of sound from on isotopic point source at distance of 10 m is 20 dB. Find the loudness (in dB) at a point at a distance 10^(7//4) m from the source.

Find intensity of sound in dB if its intensity in W // m^(2) is 10^(-10) .

A source of sound operates at 2.0 kHz, 20 W emitting sound uniformly in all direction. The speed of sound in air is 340 m s^(-1) at a distance of air is 1.2kgm ^(-3) (a) What is the intensity at a distance of 6.0 m from the source ? (b) What will be the pressure amplitude at this point ? (c ) What will be the displacement amplitude at this point ?