Light of wavelength λ = 410 nm is incident upon two thin slits that are separated by a distance d = 25 μm. The light hits a screen L = 2.4 m from the screen. It is observed that at a point y = 4.8 mm from the central maximum the intensity of the light is I = 85 W/m2. Part (a)  Write an equation for the phase shift between the light from the two slits at the observation point in terms of the given variables.   Part (b)  For the given data, what is the phase shift, in radians, between the light from the two slits at the observation point?   Part (c)  What is the intensity of the light at the two slits (I0) in watts per square meter?

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Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.