Two light waves arrives at a certain point on a screen. The waves have the same wavelength. At the arrival point, their amplitudes and phase differences are :
(I) `2a_(0),6a_(0)" and "pi " rad"` (II)`3a_(0),5a_(0)" and "pi " and"`
(III) 9a_(0), 7a_(0), " and "3pi " rad"` (IV) 2a_(0), 2a_(0) " and "0`.
The pair/s which has greatest intensity is/are :

Each of four pairs of light waves arrives at a certain point on a screen. The waves have the same wavelength. At the arrival point, their amplitudes and phase differences are (a) 2E_(0),6E_(0) , and pi rad, (b) 3E_(0), 5E_(0) , and pi rad, (c) 9E_(0), 7E_(0) and 3pi rad, (d) 2E_(0), 2E_(0) and 0 rad. Rank the four pairs according to the intensity of the light at the arrival point, greatest first. (Hint: Draw phasors.)

Light waves from two coherent source arrive at two points on a screen with path difference 0 and lambda//2 . Find the ratio of intensities at the points.

Two waves each of intensity I_(0) are disturbing the same medium. Find resultant intensities at the point where the phase difference phi is (1) 2pi (ii) pi (iii) (pi)/(2) (2pi)/(3)

Two light sources have intensity of light as I_(0) , What is the intensity at a point where the two light waves have a phase difference of pi//3 ?

Consider interference between waves form two sources of intensities I_(0)&4I_(0) .Find intensities at point where the phase difference is pi

Two sinusoidal plane waves of same frequency having intensities I_(0) and 4I_(0) are travelling in the same direction. The resultant intensity at a point at which waves meet with a phase difference of zero radian is

Two light waves superimposing at the mid-point of the screen are coming from coherent sources of light with phase difference 3pi rad. Their amplitudes are 1 cm each. The resultant amplitude at the given point will be.