Question

2. Treat each of your eyes as a circular aperture of diameter 3.5 mm. Light of wavelength 625 nm is used to view two point sources that are 10.5 cm apart. How far distance can these sources be and still be marginally resolved by your eye? Assume that the resolution is diffraction limited and use Rayleigh's criterion, and the index of refraction of the fluid in the eye is 1.35.

3. A Michelson interferometer uses light with a wavelength of 562.446 nm. Mirror M2 is slowly moved a distance x, causing exactly 4.7200×102 bright-dark-bright fringe shifts to be observed starting and ending with a central bright spot. If the mirror moved only half the distance, what would the final image be?

a. Bright spot

b. Dark spot

c. In between bright and dark spots

d. Impossible to determine, more information needed

Answer 1