Question
Physics Question on Ray optics and optical instruments
If θ1 and θ2 be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip θ is given by
A
cot2θ = cot2θ1 + cot2θ2
B
tan2θ = tan2θ1 + tan2θ2
C
cot2θ = cot2θ1 – cot2θ2
D
tan2θ = tan2θ1 – tan2θ2
Answer
cot2θ = cot2θ1 + cot2θ2
Explanation
Solution
The correct option is (A): cot2θ = cot2θ1 + cot2θ2.