Lens Power Formula - GCSE Physics
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Lens Power Formula - GCSE Physics
This tutorial explains the formula for calculating the power of a lens (in units of dioptres) using the focal length ( in metres): Power = 1 / Focal length The power of a lens tells us how much the lens converges or diverges rays of light - i.e. it tells us how much the lens BENDS light. The focal length of a lens is the horizontal distance ...
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