The intensities of two waves are $2$ and $3$ units,respectively. The average intensity of light in the interference region will be ......

Two point sources $X$ and $Y$ emit waves of the same frequency and speed,but $Y$ lags in phase behind $X$ by $2\pi l$ radians. If there is a maximum in direction $D$,the distance $XO$ (where $n$ is an integer) is given by:

Two waves of same intensity $I_0$ emitted from two sources having same phase difference $(\phi)$. Due to superposition of two waves,the intensity of resultant wave is directly proportional to . . . . . . .

Explain the intensity at the point of superposition of waves emanating from coherent and incoherent sources.

Light exhibits wave nature because...

Two point sources separated by $d = 5\, \mu m$ emit light of wavelength $\lambda = 2\, \mu m$ in phase. $A$ circular wire of radius $R = 20\, \mu m$ is placed around the sources as shown in the figure. Determine the nature of interference at points $A, B, C,$ and $D$.