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प्रश्न
In following Figure shows a radioactive source S in a thick lead walled container having a narrow opening. The radiations pass through an electric field between the plates A and B.
- Complete the diagram to show the paths of α, β and γ radiations.
- Why is the source S kept in a thick lead walled container with a narrow opening?
- Name the radiation which is unaffected by the electrostatic field.
- Which radiation is defleced the most. Given reason.
- Which among the three radiations causes the least biological damage?
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उत्तर
- The radioactive substances are kept in thick lead containers with a very narrow opening, so as to stop radiations coming out from other directions because they may cause biological damage.
- Gamma radiations.
- Beta radiation (β) is the lighter of the two types of radiation, C and A, which are alpha radiation (α).
- Alpha particle.
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संबंधित प्रश्न
A radioactive source emits three types of radiations.
Name the radiations which are deflected by the electric field.
In following Figure shows a mixed source R of alpha and beta particles in a thick lead walled container. The particles pass through a magnetic field in a direction perpendicular to the plane of paper inwards as shown by ×.
- Show in the diagram how the particles get affected.
- Name the law used in part (a).
[Hint: Alpha particles will deflect to the left while beta particles to the right]
Arrange the α, β, and γ raditions in ascending order of their ionising powers.
What is the composition of α, β and γ radiations?
A radioactive substance emits radiations ______.
Compare the ionising powers of α, β and γ radiations.
What are α-and β-radiations?
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.
Which of the following radiations suffer maximum deflection in a magnetic field?
Arrange the α, β and γ radiations in ascending order of their penetrating power.
