explain My Notes o Ask Your reach o -/2 points serPSE9 38 p.013 A beam of monoch

Question

explain

My Notes o Ask Your reach o -/2 points serPSE9 38 p.013 A beam of monochromatic light is incident an a single sat of width o 560 mm. A diffraction pattern forms on a wall 1.35 m beyond the slit. The distance between the positions of zero intensity on both sides of the central maximum is 2.22 mm. Calculate the wavelength of the light. nm Need Help? Readin points SerPSE9 38 P 015. My Notes o Ask your Teache The angular resolution of a radia telescope is to be 1959 when the incident waves have a wavelength of 3.10 mm. What minimum diameter is required for the telescope's receiving dish? Need Help?

Explanation / Answer

a) Fringe width, F = wavelength*D/d

Wavelength = F*d/D

Wavelength = 1.11 mm* 0.56 mm/ 1350 mm

Wavelength = 460.4 nm

b)

Theta = 0.195*3.14/180 = 0.003401 rad

theta = 1.22 * Wavelength/D

D = 1.22 * 3.1*10^-3/0.003401 = 1.11 m

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