The gas taken in a discharge tube glows when a high voltage is passed into it at `10^(-1)` atm.

A 10.0 cm column of air is trapped by a column of Hg 4.00 cm long in capillary tube of uniform bore when the tube is held horizontally in a room at 1 atm. Length of the air column when the tube is held vertically with the open end up is

The mean free path of the electrons in a discharge tube is 20 cm. The tube itself is 10cm long. What is the length of the Crookes dark space?

In a discharge tube when 200 volt potential difference is applied 6.25xx10^(18) electrons move from cathode to anode and 3.125xx10^(18) singly charged positive ions move from anode to cathode in one second. Then the power of tube is:

A discharge tube of 2 litre capacity containing hydrogen gas was evacuated till the pressure inside is 1 xx 10^(-5) atm. If the tube is maintained at a temperature of 27^@C , calculate the number of hydrogen molecules still present in the tube.

A spectral line is obtained from a gas discharge tube at 5000Å. If the rms velocity of gas molecules is 10^5 ms^(-1) , then the width of spectral line will be

A : The charge to mass ratio of the particles anode rays depends on nature of gas taken the discharge tube . R : The particles of anode rays carry positive charge

A quantity of gas is collected in a graduated tube over the mercury. The volume of gas at 18^(@)C is 50 mL and the level of mercuty in the tube is 100mm above the outside mercuty level. The barometer reads 750 torr. Hence, volume of gas 1 atm and 0^(@)C is approximately:

Compute the fractional change in volume of glass slab when subjected to a hydraulic pressure of 10 atm. (1 atm = 1.013 xx 10^(5) Pa, Bulk modulus of glass = 37 xx 10^(9) pa)

In a discharge tube ionization of enclosed gas is produced due to collisions between

What happens when (write balanced chemical equations): A mixture of methane and oxygen is passed through a copper tube at 200^@C and 100 atm?