Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a transparent ...
\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) A lens has a power of -3.33 dioptres. Calculate the focal length and state what type of lens it is.
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How do you choose the right focal length of lens to use for your photography?
Choosing the right focal length is a crucial part of the creative decision making process for a photographer. You can have ...
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