An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then

Two slits in Young's double slit experiment are $$1.5 \mathrm{~mm}$$ apart and the screen is placed at a distance of $$1 \mathrm{~m}$$ from the slits. If the wavelength of light used is $$600 \times 10^{-9} \mathrm{~m}$$ then the fringe separation is

Interference pattern can be observed due to superposition of the following waves:

A. $$y=a \sin \omega t$$

B. $$y=a \sin 2 \omega t$$

C. $$y=a \sin (\omega t-\phi)$$

D. $$y=a \sin 3 \omega t$$

Choose the correct answer from the options given below.