Related InterviewSolutions

• Calculate the rms velocity of molecules of a gas of density `1.5 g litre^(-1)` at a pressure of `2 xx 10^(6) N//m^(2)`.
• The density of carbon dioxide gas at `0^(@)C` and at pressure `1.0 xx 10^(5) Nm^(-2)` is `1.98 kg m^(-3)`. Find the rms velocity of its molecules at `0^(@)C` and also at `30^(@)C`, assuming pressure to be constant.
• Calculate the rms velocity of `CO_(2)` molecules at N.T.P. Given `R = 8.31 K "mole"^(-1)K^(-1)`.
• The root mean square velocity of helium atoms at normal temperature and pressure is `1300 ms^(-1)`. Calculate (i) density of helium at `0^(@)C` and (ii) mass of helium atom. Normal pressure `= 1.01 xx 10^(5)Nm^(-2)`.
• Find the molecular kinetic energy of 1 g of helium at S.T.P. Given `R = 8.3 xx 10^(7) erg`.
• A resistor R and `2muF` capacitor in series are connected to a 220V dc supply. Across the capacitor is a neon bulb that strikes at 120V. Calculate the value of R to make the bulb strike 5s after the switch has been closed.
• A bulb contains air at atmospheric pressure at `40^(@)C`. The maximum pressure bulb can with stand is `2` atmosphere. Calculate of air when the bulb is on the point of bursting.
• What resistance must be connected in series with an inductor of 5mH so that the circuit has a time constant of `2 xx 10^(-3)S` ?
• A capacitor of `1.443 muF` capacitance after being charged is shunted by a high resistance. If half the charge leaks away in one minute, find the value of the resistance.
• A mass of gas exerts a pressure of `72 cm` of Hg at `27^(@)C`. It is heated at constant volume so that its pressure after some time is `90 cm` of Hg. Calculate the new temperature of the gas.