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प्रश्न
State any two precautions to be taken while handling radioactive substances
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उत्तर
The two safety precautions to be taken while handling radioactive substances are (any two):
- Radioactive substances should be kept in thick lead containers with a very narrow opening so as to restrict the radiations coming out from other directions
- Radioactive materials should be handled with long lead tongs.
- People working with radioactive substances should put on special lead-lined aprons and lead gloves
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संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube
Name the charged particles
Why do Free electrons not leave the metal surface on their own
Name a gas caused by the Greenhouse effect
What is nucleus of an atom? Compare its size with that of the atom. Name its constitutents. How is the number of these constituents determined by the atomic number its atomic model.
Name a common device where a hot cathode ray tube is used.
An electrons emitter must have how much work function and melting point.
What is the value of the speed of gamma radiations in air or vacuum?
State three ways of obtaining an electron-beam.
Two radioactive sources A and B of half lives of 1 hour and 2 hours, respectively, initially contain the same number of radioactive atoms. At the end of two hours, their rates of disintegration are in the ratio of ______.
