Physics questions
20027 published questions with worked solutions.
- N molecules, each of mass m of gas A and 2N molecules, each of mass 2m of gas B are contained in the same vessel which is...
- If the molecular weight of two gases are M_1 and M_2, then at a temperature, the ratio of rms velocity c_1 and c_2 will be
- The temperature at which the velocity of oxygen will be half that of hydrogen at NTP is
- 10 mol of an ideal monoatomic gas at 10^ is mixed with 20 mol of another monoatomic gas at 20^ . Then, the temperature of the...
- The root mean square velocity of the molecules in a sample of helium is 5/7 th that of the molecules in a sample of hydrogen. If...
- For a gas, the difference between the two specific heats is 4150 J ,kg^ -1 ,K^ -1 . What is the specific heats at constant volume...
- A molecule of a gas has six degrees of freedom. Then, the molar specific heat of the gas at constant volume is
- Value of two principal specific heats of a gas (in cal mol^ -1 K^ -1 ) determined by different students are given. Which is most...
- 1 kg of a diatomic gas is at a pressure of 8 10^4 N ,m^ -2 . The density of the gas is 4 kg ,m^ -3 . What is the energy of the...
- If the degrees of freedom of a gas molecule be f, then the ratio of two specific heat C_p/C_V is given by
- How much heat energy in joules must be supplied to 14 g of nitrogen at room temperature to raise its temperature by 40^ at...
- For a gas, if the ratio of specific heats at constant pressure and volume is , then value of degree of freedom is
- One mole of an ideal gas requires 207 J heat to raise the temperature by 1 K, when heated at constant pressure. If the same gas...
- For the same rise in temperature of one mole of gas at constant volume, heat required for a non-linear triatomic gas is K times...
- 310 J of heat of required to raise the temperature of 2 mol of an ideal gas at constant pressure from 25^ to 35^ . The amount of...
- The ratio of the specific heats C_p C_V = in terms of degrees of freedom (n) is given by
- Solar radiation emitted by sun resembles that emitted by a black body at a temperature of 6000 K. Maximum intensity is emitted at...
- The energy emitted per second by a black body at 27^ is 10 J. If the temperature of black body is increased to 327^ , the energy...
- A surface at temperature T_0 kelvin receives power P by radiation from a small sphere at temperature T > T_0 and at a distance d....
- Consider a black body radiation in a cubical box at absolute temperature T. If the length of each side of the box is doubled and...