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प्रश्न
An electrons emitter must have how much work function and melting point.
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उत्तर
An electron emitter must have low work function and high melting point.
संबंधित प्रश्न
Arrange α, β, and γ rays in ascending order with respect to their
1) Penetrating power.
2) Ionising power
3) Biological effect
Give the relative ionizing power of α, β and γ radiations.
Define the term radioactivity.
Explain the use of radioactive in the field of medicine, agriculture and industry.
State three safety precautions that you would take while handling the radioactive substances.
How is a zinc sulphide screen affected when a cathode ray beam strikes it?
How is a cathode ray tube used to convert an electrical signal into a visual signal?
Justify with reason, whether the following nuclear reactions are allowed or not.
\[\ce{^A_Z X -> ^A_{Z + 1}Y + ^0_{-1}β}\]
Which statement about gamma decay is correct?
