Two coherent sources of intensity ratio $1 : 4$ produce an interference pattern. The fringe visibility will be

Two plane polarized light waves combine at a certain point whose electric field components are $E_1 = E_0 \sin(\omega t)$ and $E_2 = E_0 \sin(\omega t + \frac{\pi}{3})$. Find the amplitude of the resultant wave.

Two coherent sources of intensity ratio $x^2$ interfere. In the interference pattern,which of the following relations is correct?

Which characteristic of light determines its color?

To produce the phenomenon of interference,we require two sources that emit radiation of:

The difference in the number of wavelengths, when yellow light propagates through air and vacuum columns of the same thickness, is $1$. The thickness of the air column is (Refractive index of air $\mu_a = 1.0003$, Wavelength of yellow light in vacuum $\lambda_0 = 6000 \text{ Å}$)