Questions
Two simple pendulums of length 5 m and 20 m respectively are given small linear displacement in one direction at the same time. They will again be in the phase when the pendulum of shorter length has completed .... oscillations.
detailed solution
Correct option is C
If t is the time taken by pendulums to come in same phase again first time after t= 0. and Ns = Number of oscillations made by shorter length pendulum with time period TS. NL= Number of oscillations made by longer length pendulum with time period TL. Then t = NSTS = NLTL⇒NS2π5g = NL×2π20g (∵ T = 2πlg)⇒NS = 2NL i.e., if NL = 1 ⇒NS = 2Similar Questions
A charged particle is deflected by two mutually perpendicular oscillating electric fields such that the displacement of the particle due to each one of them is given by respectively. The trajectory followed by the charged particle is
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