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प्रश्न
Compare the ionising powers of α, β and γ radiations.
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उत्तर
The ionising power of α-radiation is nearly 100 times that of β radiations and nearly 10,000 times that of γ-radiations.
संबंधित प्रश्न
A radioactive source emits three types of radiations.
Name the three radiations.
The diagram in figure shows a radioactive source S placed in a thick lead walled container. The radiations given out are allowed to pass through a magnetic field. The magnetic field (shown as ×) acts perpendicular to the plane of paper inwards. Arrows shows the paths of the radiation A, B and C.
- Name the radiations labelled A, B and C.
- Explain clearly how you used the diagram to arrive at the answer in part (a).
Explain why alpha and beta particles are deflected in an electric or a magnetic field, but gamma rays are not deflected in such a field.
Arrange the α, β, and γ raditions in ascending order of their ionising powers.
State the speed of each of α, β and γ radiations.
What is the composition of α, β and γ radiations?
A radioactive substance emits radiations ______.
The figure shows a radioactive source S placed in a thick-walled lead container. The radiations given off pass through a magnetic field acting in direction perpendicular to the plane of paper inwards as shown by X. Copy the diagram and show the path of radiations. Explain why the source is kept in a thick-walled lead container.
A beam of α, β and γ rays is travelling through a certain region in space.
- Arrange them in ascending order of ionising power.
- Which of the above will pass undeviated if subjected to an electric field?
- With respect to your answer to part (b) above, what will be the change in the nucleus of an atom after such a ray is emitted.
Arrange the α, β and γ radiations in ascending order of their penetrating power.
