83 O Two light rays, initially in phase and with a wavelength of 500 nm, go through different paths by T reflecting from the various mirrors 4 shown in Fig. 35-49. (Such a reflection does not itself produce a phase shift.) (a) What least value of distance d will put the rays exactly out of phase when they emerge from the region? (Ignore the slight tilt of the path for ray 2.) (b) Repeat the question as- suming that the entire apparatus is immersed in a protein solution with Ray 1 Ray 2 Figure 35-49 Problem 83. an index of refraction of 1.38.

c) A ray of laser light is incident on an ice prism with the value of refractive index, n = 1.31 at a 5 UTM & UTMngle 25° UTM 60 5 UTM & UTM A &UTM UTM. 5 UTM i. 60° 60° Calculate the angle Figure 3 Based on the figure above, explain the propagation of light from ice prism to the ii. AJTM air medium and state the related law. UTM UTM K 7TM UTM TM TM

For problem 61 calculate the angle theta in degrees if the index of refraction of medium 1 is 1.77 (5 sig figs)

1. The limit to the eye's acuity is actually related to diffraction by the pupil. (a) What is the angle between two just-resolvable points of light for a 3.1 mm-diameter pupil, assuming an average wavelength of 570 nm? rads (b) Take your result to be the practical limit for the eye. What is the greatest possible distance a car can be from you if you can resolve its two headlights, given they are 0.8 m apart? r= km (c) What is the distance between two just-resolvable points held at an arm's length (1 m) from your eye? mm S=