Physics questions
20027 published questions with worked solutions.
- For a monoatomic gas, the work done at constant pressure is 'W'. The heat supplied at constant volume for the same rise in...
- At what temperature does the average translational kinetic energy of a molecule in a gas becomes equal to kinetic energy of an...
- Internal energy of n_1 moles of hydrogen at temperature 'T' is equal to internal energy of 'n_2' moles of helium at temperature...
- The temperature of an ideal gas is increased from 140 K to 560 K. If the r. m. s. speed of gas molecules is 'v' at 140 K, then at...
- According to Boyle's law the product PV remains constant. The dimensions of PV are same as [MHT-CET 2021]
- Two spheres 'S_1' and 'S_2' have same radii but temperatures are 'T_1' and 'T_2' respectively. Their emissive power is same and...
- Two gases A and B are at absolute temperatures 360 K and 420 K respectively. The ratio of average kinetic energy of the molecules...
- The r. m. s. speed of a gas at temperature 'T' is 2 times the r. m. s. speed at 320 K. The value of the temperature T is [MHT-CET...
- The molar specific heat of an ideal gas at constant pressure and constant volume is 'C_P' and 'C_v' respectively. If 'R' is the...
- According to the kinetic theory of gases, when two molecules of a gas collide with each other then [MHT-CET 2020]
- The radiation energy density per unit wavelength at temperature T is maximum at a wavelength _0. At temperature 2T, it will have...
- The molar specific heat at constant pressure of an ideal gas is 7 2 R. The gas is made up of molecules which are (R = gas...
- A black sphere has radius 'R' whose rate of radiation is 'E' at temperature 'T'. If radius is made ' R 3 ' and temperature '3T',...
- If 'E' is the kinetic energy per mole of an ideal gas and 'T' is the absolute temperature, then the universal gas constant is...
- If R is universal gas constant then the amount of heat needed to raise the temperature of 2 moles of an ideal monoatomic gas from...
- Two solid spheres, of radii R_1 and R_2 made of same material and have similar surfaces. The spheres are raised to the same...
- According to the kinetic theory of gases, which of the following statements is WRONG? [MHT-CET 2020]
- A container contains an ideal gas at pressure 'P', volume 'V' and temperature 'T'. A second container B contains the same gas at...
- If one mole of an ideal gas ( = 5 3 ) is mixed with one mole of a diatomic gas ( = 7 5 ). The value of 'γ' for the mixture is...
- An object is cooled from 75°C to 65°C in 2 min. The time, it takes to cool from 55°C to 45°C is [The temperature of surrounding...