Electronics and Communication Engineering - Measurements and Instrumentation - Discussion

Discussion Forum : Measurements and Instrumentation - Section 4 (Q.No. 31)
31.
The deflection of a DArsonval galvanometer is measured through a mirror and scale. The mirror is 1 m away from the light source. The mirror is mounted on, the moving system. If mirror rotates through 0.2 rad the displacement on the scale is
0.2 m
0.4 m
0.1 m
0.05 m
Answer: Option
Explanation:

Diplacement = (1) (2θ) = 0.4 m.

Discussion:
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