Please help with the derivation for part a, I am confused how to approach it Consider a monochromatic coherent light (A=600 nm) passes through a double-slit that has a separationof 0.12 mm and 0.02 mm slit width. The irradiance pattern is observed on a viewing screen at a distanceL (1.5 [m]) from the slit plane.(a) Derive and describe an expression for the irradiance pattern on the screen using equations.(b) How does the irradiance pattern change when the slit width is smaller than the wavelength of thelight?(b) How many bright fringes are there in the central diffraction maximum?

a. Intensity distance for double slit diffraction, I=4I0sin πλa sinθπλa sinθ2cos2πλd sinθThe…

Consider a monochromatic coherent light (^=600 nm) passes through a double-slit that has a separation f0.12 mm and 0.02 mm slit width. The irradiance pattern is observed on a viewing screen at a distance - (1.5 [m]) from the slit plane. a) Derive and describe an expression for the irradiance pattern on the screen using equations. b) How does the irradiance pattern change when the slit width is smaller than the wavelength of the light? b) How many bright fringes are there in the central diffraction maximum?

Consider a monochromatic coherent light (^=600 nm) passes through a double-slit that has a separation f0.12 mm and 0.02 mm slit width. The irradiance pattern is observed on a viewing screen at a distance - (1.5 [m]) from the slit plane. a) Derive and describe an expression for the irradiance pattern on the screen using equations. b) How does the irradiance pattern change when the slit width is smaller than the wavelength of the light? b) How many bright fringes are there in the central diffraction maximum?