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प्रश्न
From α, β and γ-rays, name the one which travels with the speed of light?
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उत्तर
γ-rays travel with the speed of light.
संबंधित प्रश्न
When does the nucleus of an atom tend to become radioactive?
What are free electrons?
Give a scientific explanation.
When the radiation coming out from a certain radioactive substance is passed through an electric field, marks are found at three places on the photographic plate placed in its path.
What do you mean by Mass 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?
Explain the use of radioactive in the field of medicine, agriculture and industry.
State three common properties of beta rays and cathode rays.
Which part of the atom undergoes a change in the process of radioactive decay?
The activity of a certain radionuclide decreases to 15 percent of its original value in 10 days. What is its half life?
[ln (0.15) = -1.9]
When an α-particle of mass m moving with velocity ν bombards on a heavy nucleus of charge Ze, its distance of closest approach from the nucleus depends on m as:
