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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 | |
A. | 0.2 m [Wrong Answer] |
B. | 0.4 m [Correct Answer] |
C. | 0.1 m [Wrong Answer] |
D. | 0.05 m [Wrong Answer] |