Physics questions
20027 published questions with worked solutions.
- A gas at a pressure P is contained in a vessel. If the masses of all the molecules are halved and their speeds doubled, the...
- The temperature of hydrogen at which the RMS speed of its molecules is equal to that of oxygen molecules at a temperature of 31^...
- The cylinder of capacity 200 litre is filled with hydrogen gas. The total average kinetic energy of translator motion of its...
- A cylinder piston arrangement has N molecules at an absolute temperature T. The number of molecules in the arrangement is...
- An enclosed enclosure of constant volume contains an ideal mono atomic gas. The temperature of the gas is raised from 27^ C to...
- A mixture of two gases A and B is in a container at a constant temperature. Gas A is diatomic and gas B is mono atomic. The ratio...
- Two vessels of equal volume contains equal masses of oxygen in one at 400 K and hydrogen in the other at 300 K . The ratio of rms...
- At what temperature is the K.E. of a gas molecule half that of its value at 27^ C ?
- A sample of gas is at 100^ C . To what temperature must it be raised in order to double the rms velocity of its molecules?
- If the absolute temperature of a gas is increased 5 times the r.m.s. velocity of the molecules will be
- If the kinetic energy of a perfect gas is 60 Joule and its volume is 3 litre, then its pressure will be
- How much should the pressure be increased in order to decrease the volume of a gas by 10% at a constant temperature?
- If the energy of a gas per litre is 300 joule, then its pressure will be
- The gases are at absolute temperature 300 K and 350 K respectively. The ratio of average K. E of their molecules is
- A flask contains hydrogen and helium gases in the ratio 1:3 at temperature 300 K . The masses of helium and hydrogen molecules...
- The temperature at which the average translational kinetic energy of molecule is equal to the energy gained by an electron in...
- If the universal gas constant is 8.3 joule/mole ,K and the Avogadro's number 6 10^ 23 , then mean kinetic energy of the oxygen...
- An ideal gas in a container of volume 500 cc is at a pressure of 2 10^ 5 N/m^2 . The average kinetic energy of each molecule is 6...
- When the momentum of molecules of a gas increases by 20% the percentage increase in the kinetic energy of the molecules will be
- The CGS unit of specific heat is