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In 20 s, two simple pendulums, P and Q, complete 9 and 7 oscillations, respectively, on the Earth. On the Moon, where the acceleration due to gravity is \(\frac16\)th that on the Earth, their periods are in the ratio (A) 8 : 1 (B) 9 : 7 (C) 7 : 9 (D) 3 : 14. |
Answer» Correct option is (C) 7 : 9 |
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