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प्रश्न
State the speed of each of α, β and γ radiations.
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उत्तर
The speed of α radiation is nearly 107 ms-1.
The speed of β radiation is about 90% of the speed of light, or 2.7 × 108 ms-1.
The speed of γ radiation is 3 × 108 ms-1 in a vacuum.
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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]
Is it possible to deflect γ - radiations in a way similar to α and β -particles, using the electric or magnetic field? Give reasons.
State following four properties each of α, β and γ radiations:
- Nature,
- Charge,
- Mass and
- Effect of electric field.
What is the composition of α, β and γ radiations?
Arrange the α, β, and γ radiation in ascending order of their biological damage. Give reason.
A radioactive substance emits radiations ______.
Compare the penetrating powers of α, β and γ-radiations.
Compare the ionising powers of α, β and γ 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.
