KVPY Government Jobs Exams

The capacitor of capacitance C in the circuit shown in fully charged initially. Resistance is R.–

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KVPY Other Question

An ideal monatomic gas expands to twice its volume. If the process is isothermal, the magnitude of work done by
the gas is W1. If the process is adiabatic, the magnitude of work done by the gas is Wa . Which of the following is
true ?
(A) Wi = Wa > 0 (B) Wi > Wa = 0 (C) Wi >Wa > 0 (D) Wi > Wa > 0 A liquid drop placed on a horizontal plane has a near spherical shape (slightly flattened due to gravity). Let R be
the radius of its largest horizontal section. A small disturbance causes the drop to vibrate with frequency v about
its equilibrium shape. By dimensional analysis the ratio
3
v
σ / ρR
can be (Here σ is surface tension, ρ is density,
g is acceleration due to gravity, and k is arbitrary dimensionless constant)