KVPY Government Jobs Exams

The ratio of the speed of sound to the average speed of an air molecule at 300 K and 1 atmospheric pressure is
close to

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KVPY Other Question

A steady current I flows through a wire of radius r, length L and resistivity ρ. The current produced heat in the
wire. The rate of heat loss in a wire is proportional to its surface area. The steady temperature of the wire is
independent of–
(A) L (B) r (C) I (D) ρ
A body is executing simple harmonic motion of amplitude a and period T about the equilibrium position x = 0.
large numbers of snapshots are taken at random of this body in motion. The probability of the body being found in
a very small interval x to x + |dx| is highest at