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प्रश्न
Why is a cathode ray tube evacuated to a low pressure?
उत्तर
The cathode ray tube is evacuated to a low pressure to avoid collisions of electrons with air molecules.
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संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube.
State the approximate voltage used to heat the filament
Give the relative ionizing power of α, β and γ radiations.
What kind of change takes place in a nucleus when a β -particle is emitted?
Explain the use of radioactive in the field of medicine, agriculture and industry.
How is a cathode ray beam affected while passing through a magnetic field?
Name the three main parts of a Cathode Ray Tube.
Name a common device where a hot cathode ray tube is used.
The count rate of activity of a radioactive sample of a very large population decreased from 1024 to 128 in 3 minutes. Then the rate of disintegration at the end of 5 minutes is ______.
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.
