The equation of a stationary wave along a stretched string is given by y = 4 sin 2πx/3 cos 40πt where x and y are in cm and t is in sec. The separation between two adjacent nodes is

Question:

Options :

(a) 3 cm
(b) 1.5 cm
(c) 6 cm
(d) 4 cm

Answer :

(b) 1.5 cm

Answer Steps :

step 1

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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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