Difference Between Loudness And Intensity

Loudness And Pitch

Loudness And Frequency

Distinguish between loudness and intensity of sound.

An isotropic point source 'S' of sound emits constant power. Two points A and B are situated at distance x and 2x from S. the difference between the loudness of points A and B is about (log 2=0.3)

Two beams of light having intensities I and 4I interferer to produce a fringe pattern on a screen.The phase difference between the beam is pi/2 at point Aand 2pi at point B. Then find out the difference between the resultant intensities at A and B.

Interference fringes are produced on a screen by using two light sources of intensities / and 9/. The phase difference between the beams pi/2 is at point P and pi at point Q on the screen. The difference between the resultant intensities at point P and Q is

Two beams of light havin intensities I and 4I interferer to produce a fringe pattern on a screen. The phase difference between the beam is (pi)/(2) at point A and 2pi at point B. then find out the difference between the resultant intensities at A and B.

Consider interference between two sources of intensity I and 4I. Find out resultant intensity where phase difference is (i). pi//4 (ii). pi (iii). 4pi

The intensity of sound at a point A is 10^(-4) Wm^(-2) and that at point B is 10^(-8) Wm^(-2) .What is the difference between the intensity levels at A and B ?