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प्रश्न
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संबंधित प्रश्न
State three factors on which the rate of emission of electrons from a metal surface depends
Under which conditions does the nucleus of an atom tend to radioactive?
What are isobars?
State two similarities and two dissimilarities between the γ-rays and X-rays.
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?
Explain the use of radioactive in the field of medicine, agriculture and industry.
A certain nucleus A (mass number 238 and atomic number 92) is radioactive and becomes a nucleus B (mass number 234 and atomic number 90) by the loss of one particle.
What particle was emitted?
What are the types of emission?
State any two uses of cathode rays.
From α, β and γ-rays, name the one which is not affected by electric or magnetic field?
