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The staff reading at a distance of 80 m from a level with the bubble at its centre is 1.31 m. When the bubble is moved by 5 divisions out of the centre, the reading is 1.39 m. The angular value of the one division of the bubble, is. | |
A. | 28.8 secs [Wrong Answer] |
B. | 41.25 secs [Wrong Answer] |
C. | 14.52 secs [Correct Answer] |
D. | 25.05 [Wrong Answer] |