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Electromagnetic radiations:
What are the common features among all the Electromagnetic radiations?
Ans: 1. They all can be described in terms of oscillating electric and magnetic fields perpendicular to each other.
2. They are transverse in nature.
3. All the radiations travel with the speed of light
Suppose the sides of a closed polygam represent vector arrangend head to tail rule , what is sum of these vectors ?
1st law -What is the significance of the second foci of the elliptical orbit? 2nd law -if the speed of the planet changes,why donot we feel it?
all details about electronics
what is electic field
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