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प्रश्न
In the following atoms, which one is a radioisotope? Give one use of this isotope.
O16, C14, N14, He4
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उत्तर
C14 is a radioisotope. It is used in carbon dating to determine the age of organic materials. It is used in biological research, agriculture, pollution control, and archaeology and so on.
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संबंधित प्रश्न
Write one use of cathode ray tube.
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 kind of change takes place in a nucleus when a β -particle is emitted?
Explain the use of radioactive in the field of medicine, agriculture and industry.
A nucleus of an element X which has the symbol `""_84^202` X emits an alpha particle and then a beta particle. The final nucleus is `""_"b"^"a"` Y Find a and b.
What happens to the position of an element in the periodic table when it emits an alpha particle
An electrons emitter must have how much work function and melting point.
The mean lives of a radioactive substance are 1620 and 405 years for β-emission and β-emission respectively. The time after which three fourth of a sample will decay if it is decaying both by β-emission and β-emission simultaneously will be ______ years.
(Take ln 2 = 0.693)
Assertion (A): The force of repulsion between atomic nucleus and α-particle varies with distance according to inverse square law.
Reason (R): Rutherford did α-particles scattering experiment.
