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SHOW ALL WORK A circular scale like the one you will use to study reflection and

ID: 1365834 • Letter: S

Question

SHOW ALL WORK

A circular scale like the one you will use to study reflection and refraction is shown in Figure. The laser beam passes over the zero mark on the circular scale. A semicircular transparent plate has its straight edge aligned as shown. Point N is at 32.0 degrees, and point C is at 190.0 degrees. The semicircular transparent plate is then reoriented, as in Figure, to study the total internal reflection. If the refracted beam just disappears when the flat surface of the semicircle is aligned with AA'2 what is the position of point R?

Explanation / Answer

n=sin32/sin22

critical angle = 44.9840

position of R= 89.9680