Question

The resolution of the eye is ultimately limited by the pupil diameter. What is the smallest diameter spot the eye can produce on the retina if the pupil diameter is 3.64 mm? Assume light with a wavelength of λ = 550 nm. (Note: The distance from the pupil to the retina is 25.4 mm. In addition, the space between the pupil and the retina is filled with a fluid whose index of refraction is n = 1.336.)
Hint: The size of the spot is twice the distance from the main axis to the first minimum.
μm

8. How many (whole) dark fringes will be produced on an infinitely large screen if blue light (λ = 470 nm) is incident on two slits that are 15.0 μm apart?(The 3% margin of error does not apply for this question)

Answer 1