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 2.38 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.

A50 kg student climbs 3 m to the top of a set of stairs. calculate the change in the student’s gravitational potential energy from the bottom to the top of the stairs. show your calculations and include units in your answer. how much total work does the student do while climbing the stairs? show your calculations or explain your reasoning. include units in your answer. it takes the student 30 s to climb to the top of the stairs. what is the average power generated by the student climbing the stairs? show your calculations and include units in your answer. the next day the student carries a 10 kg backpack up the same stairs and again takes 30 s to reach the top of the stairs. is the average power you calculated in part (c) greater than, less than, or equal to the average power the student generated the next day? explain your answer.