A mixture of 2 moles of helium gas (atomic mass 4 a.m.u). and 1 mole of argon gas (atomic mass 40 a.m.u) is kept at 300K in a container. The ratio of the rms speeds [Vrms (helium) / Vrms (argon)] is

Question:

Options :

(a) 0.32(d) 3.16
(b) 0.45
(c) 2.24
(d) 3.16

Answer :

(d) 3.16

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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