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because gases do not conduct electricity under normal pressure so at pressure of 0.1-0.001 mmHg with very high potential difference of 5000 to 10000 volts gases conduct electricity and produce fluorescence on the wall of discharge tube and it also avoid the collision of cathode rays with the positive rays
What else can I help you with?
Does a gas discharge tube filled with boron emit the same wavelength og light as a tube filled with hydrogen?
No, a gas discharge tube filled with boron does not emit the same wavelength of light as a tube filled with hydrogen. Each element has a unique electronic configuration, leading to distinct energy levels and corresponding spectral lines. When excited, boron and hydrogen release photons at different wavelengths, resulting in different colors of light. Thus, the emission spectra of the two gases will be different.
How does a liquid filled proving system functions?
A liquid-filled proving system uses a liquid-filled capillary tube connected to a pressure gauge to measure pressure. When pressure is applied to the system, it causes the liquid in the tube to move, which is then used to determine the pressure level. The movement of the liquid is typically calibrated to correspond to specific pressure values.
Why gases conduct electricity when pressure is reduced in discharge tube?
When the pressure is reduced in a discharge tube, the mean free path of the gas molecules increases. This allows the gas molecules to gain more energy and move freely, colliding with the charged particles in the discharge tube and facilitating the flow of electric charge. As a result, the gases become partially ionized, creating a conductive path for the electricity.
What happens when you blow over the mouth of a test tube which is half filled with water?
Blowing over the mouth of the test tube will create a decrease in air pressure inside the tube. This decrease in pressure will cause the water in the test tube to rise up due to the higher pressure outside the tube. Ultimately, the water level in the test tube will rise as a result of the change in pressure.
When magnesium reacts quickly with hydrochloric acis to produce hydrogen gas in a glass tube with a rubber stopper why would the rubber stopper burst of?
The reaction between magnesium and hydrochloric acid produces hydrogen gas, which builds up pressure inside the closed glass tube. If the pressure exceeds the strength of the rubber stopper, it will burst off to release the built-up pressure and prevent the glass tube from breaking due to the increased pressure.
Why it is necessary to decrease the pressure in discharge tube to get cathode rays?
why it is necessary to decrease the pressure in the discharge tubbe to get cathode rays
Why discharge tube appears dark at very low pressure?
At very low pressure in a discharge tube, there are fewer gas atoms present to ionize and produce light. This results in fewer collisions and less emission of visible light, causing the discharge tube to appear dark.
Why is it necessary to decrease pressure in the discharge tube to get cathod rays?
why it is necessary to decrease the pressure in the discharge tubbe to get cathode rays
How does a liquid filled proving system functions?
A liquid-filled proving system uses a liquid-filled capillary tube connected to a pressure gauge to measure pressure. When pressure is applied to the system, it causes the liquid in the tube to move, which is then used to determine the pressure level. The movement of the liquid is typically calibrated to correspond to specific pressure values.
What is mercury filled glass tube that measures air pressure?
This is called a barometer.barometerBarometer
How do you know hydrogen is there in the air?
First take test tube (an empty test tube) hydrogen is colorless ,tasteless and odorless. (it is also very light that why weather balloons are filled with hydrogen). Then put a burning splint at the mouth of the test tube and you know that there is hydrogen in the air because hydrogen burns with a pop when it is mixed with air so now you know that there is hydrogen in the air.
Why does the water rise in the measuring tube when you use hydrogen gas?
When hydrogen gas is produced in a chemical reaction, it displaces the water in the measuring tube since hydrogen is less dense than water. As a result, the water level in the tube rises as the lighter hydrogen gas occupies the space previously filled by water.
Why gases conduct electricity when pressure is reduced in discharge tube?
When the pressure is reduced in a discharge tube, the mean free path of the gas molecules increases. This allows the gas molecules to gain more energy and move freely, colliding with the charged particles in the discharge tube and facilitating the flow of electric charge. As a result, the gases become partially ionized, creating a conductive path for the electricity.
Why is it necessary to decrease the pressure in the discharge tube to get the cathode rays?
cathode rays can't travel in air
How discharge tube is different from tube light?
A discharge tube is a type of gas-filled tube that emits light when an electric current passes through it, commonly used in neon signs or plasma displays. On the other hand, a tube light is a type of fluorescent lamp that uses a phosphor coating inside a glass tube to produce light. While both types of tubes rely on gas and electric current to produce light, they differ in their construction and application.
What happens when you blow over the mouth of a test tube which is half filled with water?
Blowing over the mouth of the test tube will create a decrease in air pressure inside the tube. This decrease in pressure will cause the water in the test tube to rise up due to the higher pressure outside the tube. Ultimately, the water level in the test tube will rise as a result of the change in pressure.
Why argon is not used in discharge tube even at low pressure?
The question cannot be answered sensibly because argon is used!
