The total energy carried by a light wave when it travels from a rarer to a non-reflecting and non-absorbing medium:

Two coherent waves of intensities $I_1$ and $I_2$ produce an interference pattern. The maximum intensity of the interference pattern is .....

$A$ beam with wavelength $\lambda$ falls on a stack of partially reflecting planes with separation $d$. The angle $\theta$ that the beam should make with the planes so that the beams reflected from successive planes may interfere constructively is (where $n = 1, 2, \dots$)

Two coherent sources of intensities $I_1$ and $I_2$ produce an interference pattern on a screen. The maximum intensity $I_{max}$ in this interference pattern is:

Which of the following is the path difference for destructive interference?

Two coherent plane waves of identical frequency,polarization,and intensity $I$ interfere at a point where they differ in phase by $60^{\circ}$. What is the resulting intensity?