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प्रश्न
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.
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उत्तर
1) Gamma radiations
2) Because of the mass of B particle is less than that of α, hence radiation deflects more than A.
3) `gamma` rays
4) beta radiation `""_6^14C -> ""_7^14N + ""_(-1)^0beta^(-)`
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संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube.
What will happen to the beam when it passes through the electric field?
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(ii) Why is this radiation mentioned by you, ideal for this purpose ?
Radioactive substances were found to give off three types of rays. Name them. How do they
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(b) React to the electric field?
(c) Act when different thickness of lead sheets is placed in their path?
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.
It is advised not to touch a radioactive substance by hand. Give reason.
Mention four properties of Becquerel rays.
Which of the following statements is/are correct?
- α particles are photons
- Penetrating power of γ radiation is very low
- Ionization power is maximum for α rays
- Penetrating power of γ radiation is very high
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In U238 ore containing Uranium the ratio of U234 to Pb206 nuclei is 3. Assuming that all the lead present in the ore is final stable product of U238. Half life of U238 to be 4.5 × 109 years and the age of ore is ______ × 109 years. (in 109 years)
