010) Which of the following airpressures in the discharge tubeis appro

1.	010) Which of the following airpressures in the discharge tubeis appropriate for the productionof cathode rays? *O 0.001 mmO1 mmO 1 cmO 0.001 cm
Answer» Answer: 0.001 cm Explanation: The air PRESSURE inside the cathode ray tube is low. Because if we increase the pressure of gas present inside the tube then the number of atoms of the gas INCREASES. ie, we have PV =nRT If volume and temperature are kept CONSTANT then pressure is directly proptional to n which is amount of gas in moles. If the number of atoms in the tube increases then electrons will collide with these atoms. These collisions will act as obstructions in the path of electrons THEREBY preventing electrons from reaching anode.

010) Which of the following airpressures in the discharge tubeis appropriate for the productionof cathode rays? *O 0.001 mmO1 mmO 1 cmO 0.001 cm

Answer»

Answer:

0.001 cm

Explanation:

The air PRESSURE inside the cathode ray tube is low. Because if we increase the pressure of gas present inside the tube then the number of atoms of the gas INCREASES.

ie, we have PV =nRT

If volume and temperature are kept CONSTANT then pressure is directly proptional to n which is amount of gas in moles. If the number of atoms in the tube increases then electrons will collide with these atoms. These collisions will act as obstructions in the path of electrons THEREBY preventing electrons from reaching anode.

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