A particle moves with simple harmonic motion in a straight line. In first t s, after starting from rest it travels a distance a, and in next is it travels 2a, in same direction, then

Question:

Options :

(a) amplitude of motion is 3a
(b) time period of oscillations is 8t
(c) amplitude of motion is 4a
(d) time period of oscillations is 6t

Answer :

(d) time period of oscillations is 6t

Answer Steps :

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An alternating voltage source is connected in series with a resistance R and an inductance L. If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is:

In an a. c. circuit the instantaneous current and e.m.f. are represented as: I = I0 sin(ωt – π/6) and E = E0 sin(ωt + π /3) respectively. The voltage leads the current by

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