Question

What is the relationship between the linear displacement of the graticule image in the eyepiece plane and reflector tilt?

(a) Both are independent of each other

(b) Linear displacement is directly proportional to the reflector tilt

(c) Linear displacement is inversely proportional to the reflector tilt

(d) Linear displacement is directly proportional to the square of the reflector tilt

I had been asked this question in my homework.

My query is from Optical Instruments for Angular Measurement topic in section Angular Measurement and Circular Division of Engineering Metrology

Answer 1

Correct answer is (b) Linear displacement is directly proportional to the reflector tilt

The best I can explain: Linear displacement of the graticule image is directly proportional to tilt of the reflector. It can be measured by an eyepiece graticule, electronic detector system or optical micrometer, scaled directly in angular units.