explain the terms
1. power of lens
2. magnification
3. lens formula
4. principle focus
5. refraction and lose
please answer this question
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Power - definition
Power of a lens is defined as the inverse of focal length (in meters) of the lens. It is a measure of the amount of deviation of light ray produced by a lens, more the power, more is the deviation. Unit of power is Dioptre (D).
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