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प्रश्न
State three common properties of beta rays and cathode rays.
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उत्तर
(i) Beta rays and cathode rays both are composed of electrons.
(ii) Beta rays and cathode rays both are deflected by the electric and magnetic fields in the same direction.
(iii) Beta rays and cathode rays both ionise the gas through which they pass.
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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?
Why is a cathode ray tube evacuated to a low pressure?
An electromagnetic radiation is used for photography in fog. [2]
(i) Identify the radiation.
(ii) Why is this radiation mentioned by you, ideal for this purpose ?
What do you mean by Atomic number
State the penetrating range of α, β and γ radiations.
Name two radioactive substances.
State two characteristics of the substance used as thermionic emitter.
State one use of radio-isotopes.
A radioactive material decays by simultaneous emissions of two particles with half-lives of 1400 years and 700 years respectively. What will be the time after which one-third of the material remains? (Take In3 = 1.1)
