Treat the pupil of your eye as a circular aperture of diameter ...

[codyclark]

Treat the pupil of your eye as a circular aperture of diameter 3.5 mm. Light of wavelength 500 nm is used to view two point sources that are 283 m distant from you.
 
  How far apart must these two point sources be if they are to be just barely resolved by your eye, assuming that the resolution is limited by diffraction?

Question 2

A simple pendulum that consists of a small ball of mass m and a massless wire of length L swings with a period T.
 
  Suppose now that the mass is rearranged so that mass of the ball was reduced but the mass of the wire was increased, with the total mass remaining m and the length being L. What is true about the new period of swing? (There could be more than one correct choice.) A) The new period is T because the total mass m has not changed.
  B) The new period is T because the length L has not changed.
  C) The new period is greater than T.
  D) The new period is less than T
  E) The new period is T because neither L nor m have changed.

[cam1229]

Answer to Question 1

4.9  10-2 m

Answer to Question 2

D

[codyclark]

Thanks

[cam1229]

Welcome