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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
State the energy conversion taking place in a cathode ray tube
What is thermionic emission?
Name the unit in which the work function of a metal is expressed.
In the following fig. shows a radioactive source S in a thick lead container. The radiations pass through an electric field between the plates P and Q. Complete the diagram to show the paths of α , β and γ radiations.
Why is the source S placed in a thick lead container?
A nucleus is \[\ce{^24_11 Na}\] β-radioactive.
Write the equation represent β-decay.
How is a zinc sulphide screen affected when a cathode ray beam strikes it?
What is the value of the speed of gamma radiations in air or vacuum?
State three ways of obtaining an electron-beam.
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
