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प्रश्न
What do you mean by Atomic mass
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उत्तर
Atomic mass of element is the relative mass of its atom as compared to the mass of carbon atom taken as 12.
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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?
State three factors on which the rate of emission of electrons from a metal surface depends
What is meant by radioactivity?
State two similarities and two dissimilarities between the γ-rays and X-rays.
What are the types of emission?
How is a cathode ray beam affected while passing through an electric field?
Name the Different Radiations Which Are Emitted by the Radioactive Substances.
Are all the radiations mentioned by you, emitted in a single radioactive decay?
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
The mean lives of a radioactive substance are 1620 and 405 years for β-emission and β-emission respectively. The time after which three fourth of a sample will decay if it is decaying both by β-emission and β-emission simultaneously will be ______ years.
(Take ln 2 = 0.693)
