A lens that is \"optically perfect\" is still limited by diffraction effects. Su

Question

A lens that is "optically perfect" is still limited by diffraction effects. Suppose a lens has a diameter of 130 mm and a focal length of 700 mm. Find the angular width (that is, the angle from the bottom to the top) of the central maximum in the diffraction pattern formed by this lens when illuminated with 530 nm light. Express your answer using two significant figures. 0? 8.6.10 rad Submit My Answers Giv Incorrect; Try Again; 5 attempts remaining Part B What is the linear width (diameter) of the central maximum at the focal distance of the lens? Express your answer using two significant figures. 2y =

Explanation / Answer

A] theta = 2*1.22 lambda/D = 2*1.22*530e-9/130e-3

= 1.0*10^-5 rad answer

b] linear width = 2y = theta*f = 1.0*10^-5*700e-3 = 7.0*10^-6 m

= 7.0 um answer

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