The coefficient of volume expansion of glycerine is 49 x 10-5 /oC .The fractional change in the density for a 30o C rise in temperature will be :
0.145
0.0145
0.00145
0.000145
A piston of cross-section area A is fitted in cylinder in which gas of volume V at pressure P is enclosed. Gas obeys Boyle's law, the angular frequency if piston is displaced slightly, is :
Two straight metallic strips each of thickness t and length l are riveted together. Their coefficients of linear expansions are If they are heated through temperature , the bimetallic strip will bend to form an arc of radius :
The average kinetic energy of a gas molecule at 27o C is 6.21 x 10-21 J. Its average kinetic energy at 227o C will be
The r.m.s velocity of nitrogen molecules at N.T.P is
33 m/s
493 m/s
517 m/s
546 m/s
When the temperature of a gas filled in a closed vessel is increased by 1o C, its pressure increases by 0.4 %. The initial temperature of the gas was
25o C
250 K
250o C
25 K
At what temperature, volume of an ideal gas at 0o C becomes triple :
546o C
382o C
719o C
246o C
In thermal equilibrium, the average velocity of a gas molecule is
proportional to T3
proportional to T2
proportional to
zero
