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प्रश्न
State two similarities and two dissimilarities between the γ-rays and X-rays.
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उत्तर
Similarities:
Both ?-radiations and X-rays affect photographic plate, both travel with the speed of light.
Dissimilarities:
?-radiations are obtained in emissions from the radioactive substances due to energy change in the nucleus of their atoms and X- rays are obtained when highly energetic cathode rays are stopped by a heavy metal target of high melting point.
?-radiations have high penetration power but X-rays do not have have very high penetration power.
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संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube.
State the approximate voltage used to heat the filament
What do you mean by Mass number.
State the penetrating range of α, β and γ radiations.
Radioactive substances were found to give off three types of rays. Name them. How do they
(a) React to the magnetic field?
(b) React to the electric field?
(c) Act when different thickness of lead sheets is placed in their path?
A radioactive source emits three types of radiations.
Name the radiation which has the highest ionizing power.
What are the types of emission?
How is a zinc sulphide screen affected when a cathode ray beam strikes it?
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.
A deuteron strikes 8O16 nucleus with subsequent emission of an alpha particle. Identify the nucleus so produced:
Assertion (A): The force of repulsion between atomic nucleus and α-particle varies with distance according to inverse square law.
Reason (R): Rutherford did α-particles scattering experiment.
