Physics questions
20027 published questions with worked solutions.
- The gases carbon monoxide (CO) and nitrogen (N) at the same temperature have kinetic energies E_1 and E_2, respectively. Then,...
- The temperature at which the rms velocity of hydrogen is four times of its value at NTP, is [MHTCET 2005]
- In terms of mechanical unit, C_p - C_v = _ _ _ _ _, where C_p and C_v are principal specific heats. [MHTCET 2018]
- A black body is heated from 27^ C to 927^ C . The ratio of radiation emitted will be [MHTCET 2019]
- A black body is at a temperature 300 K . It emits energy at a rate proportional to [MHTCET 2012]
- The root mean square speed of hydrogen molecules at 300 K is 1930 m ,s^ -1 . Then, the root mean square speed of oxygen molecules...
- The rms velocity of a particle is v at pressure p. If the pressure increases by two times, then the rms velocity will be [MHTCET...
- Kinetic energy of 1 g molecule of a gas at normal temperature and pressure, will be [MHTCET 2016]
- The temperature of the two bodies A and B are respectively 727^ C and 327^ C . The ratio E_A : E_B of is [MHTCET 2022]
- If 'C_P' and C_V are molar specific heats of an ideal gas at constant pressure and volume respectively. If ' ' is ratio of two...
- The maximum wavelength of radiation emitted by a star is 289.8 nm . Then intensity of radiation for the star is (Given: Stefan's...
- The S. I. unit and dimensions of Stefan's constant ' ' in case of Stefan's law of radiation is [MHT-CET 2023]
- The r. m. s. speed of oxygen molecule in a gas is 'u'. If the temperature is doubled and the molecules dissociate into two atoms,...
- If the kinetic energy per unit volume of an ideal gas is 'E', then the pressure exerted by the gas is [MHT-CET 2023]
- The ratio of R.M.S. velocities of hydrogen molecules to oxygen molecules at 273^ C is (Molecular wt. of hydrogen and oxygen is 2...
- The original temperature of a black body is 727^ C . The temperature to which the black body must be raised so as to double the...
- According to the assumptions of kinetic theory of gases, when two molecules of a gas collide with each other, then [MHT-CET 2023]
- The r. m. s. velocity of hydrogen molecules at temperature T is seven times the r. m. s. velocity of nitrogen molecules at 300 K...
- Two vessels separately contain two ideal gases A and B at the same temperature. The pressure of A is twice that of B. Under such...
- The translational kinetic energy of the molecules of a gas at absolute temperature (T) can be doubled by [MHT-CET 2023]