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प्रश्न
Why should a radioactive substance not be touched by hands?
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उत्तर
Radioactive substance should not be touched by hands because these radiations are harmful; when radiation falls on the human body, they kill the human living tissues and cause radiation burns.
संबंधित प्रश्न
Why is a cathode ray tube evacuated to a low pressure?
When is said to be the nucleus unstable?
What do you mean by Atomic number
Draw a diagram of a simple atom showing the nucleus and electrons. In this atom:
(a) What type of charge will there be on the nucleus?
(b) What is the value of this charge?
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 two radioactive substances.
How is a cathode ray beam affected while passing through an electric field?
Which part of the atom undergoes a change in the process of radioactive decay?
