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प्रश्न
Compare the penetrating powers of α, β and γ-radiations.
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उत्तर
γ -radiations are nearly 100 times more penetrating than β-radiations and 10,000 times more penetrating than α-radiations.
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संबंधित प्रश्न
A radioactive source emits three types of radiations.
Name the three radiations.
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]
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?
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.
State following four properties each of α, β and γ radiations:
- Nature,
- Charge,
- Mass and
- Effect of electric field.
Arrange the α, β, and γ radiation in ascending order of their biological damage. Give reason.
A radioactive substance emits radiations ______.
What are α-and β-radiations?
Which nuclear radiation will travel undeviated in an electric field?
Which of the following radiations suffer maximum deflection in a magnetic field?
