Light of wavelength  = 480 nm is incident upon two thin slits that are separated by a distance d = 25 m. The light hits a screen L = 1.5 m from the screen. It is observed that at a point y = 3.9 mm from the central maximum the intensity of the light is I = 95 W/m².

A) please write an equation for the phase shift between the light from the two slits at the observation point in terms of the given variables.

B) For the given data, what is the phase shift, in radians, between the light from the two slits at the observation point?

C)What is the intensity of the light at the two slits (I₀) in watts per square meter?