Two pendulums of time periods 3 s and 7 s respectively start oscillating simultaneously from two opposite extreme positions. After how much time they will be in phase:
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a
218s
b
214s
c
212s
d
2110s
answer is A.
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Detailed Solution
Let they will be m phase after time 't' then t3-t7=12⇒t=218s
Two pendulums of time periods 3 s and 7 s respectively start oscillating simultaneously from two opposite extreme positions. After how much time they will be in phase: