Explain principle of optical square with neat sketch.

2 Answers

Answer :

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Principle: According to the principle of reflecting surfaces , the angle between the first Incident ray and last reflected ray is twice the angle between the mirrors/reflecting surfaces. In optical square the angle between horizon sight and index sight will be 90ᵒ. 

Answer :

Principle of optical square :- The angle between the first incident ray and the last reflected ray is twice the angle between the two mirrors

In the case of optical square the angle between the mirrors is 45° while that between the first incident ray and last reflected ray is 90°.

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