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प्रश्न
Which part of the atom undergoes a change in the process of radioactive decay?
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उत्तर
The nucleus of the atom undergoes a change in the process of radioactive decay.
संबंधित प्रश्न
Name the unit in which the work function of a metal is expressed.
Complete the diagram as given above by drawing the deflection of radioactive radiations in an electric field
Radiations given out from a source when subjected to an electric field in a direction perpendicular to their path are shown below in the diagram. The arrows show the path of the radiation A, B and C. Answer the following questions in terms of A, B and C.
1) Name the radiation B which is unaffected by the electrostatic field.
2) Why does the radiation C deflect more than A?
3) Which among the three causes the least biological damage externally.
4) Name the radiation which is used in carbon dating.
What happens to the atomic number of element when (i) An α -particle, (ii) A β -particle 1 and (iii) γ-radiation is emitted?
Radioactive substances were found to give off three types of rays. Name them. How do they
(a) React to the magnetic field?
(b) React to the electric field?
(c) Act when different thickness of lead sheets is placed in their path?
A certain nucleus A (mass number 238 and atomic number 92) is radioactive and becomes a nucleus B (mass number 234 and atomic number 90) by the loss of one particle.
What particle was emitted?
Why should a radioactive substance not be touched by hands?
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
State three ways of obtaining an electron-beam.
88Ra226 experiences three α - decay. Find the number of neutrons in the daughter element.
