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Q. What is pair production and pair annihilation?
Pair production:
The conversion of a photon in to an electron-positron pair on its interaction with the strong electric field surrounding a nucleus is called pair production.
Pair annihilation:
The converse of pair production in that an electron and positron combine to produce a photon is known as annihilation of matter.
Do objects of different weights fall with same acceleration on the earth? Yes , objects fall with the similar acceleration regardless of their weights at the surface of earth,
what does it mean
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Action and reaction are always equal and opposite.Then,how does a body moves?
In this type of capacitors the dielectric consists of one or more layer of extremely thin craft paper which looks very much like cigarette paper. The metal plates consist of alumin
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