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प्रश्न
It is advised not to touch a radioactive substance by hand. Give reason.
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उत्तर
The reason is that the radiations (α, β and γ) emitted by a radioactive substance have large penetrating power.
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?
State three factors on which the rate of emission of electrons from a metal surface depends
What are isobars?
Explain the use of radioactive in the field of medicine, agriculture and industry.
A radioactive source emits three types of radiations.
Name the radiation which has the highest ionizing power.
Define bound electrons.
How is a zinc sulphide screen affected when a cathode ray beam strikes it?
How is a cathode ray tube used to convert an electrical signal into a visual signal?
The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be ______.
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)
