1.

If a combination of 3 convex lens is arranged in the shown manner the focal length of lens 1 is + 5 cm, lens II is 10 cm and lens III is 20 cm. Calculate the total power of the combination of the lens.

Answer»

If a combination of 3 convex lens is arranged in the shown manner the focal length of lens 1 is + 5 cm, lens II is 10 cm and lens III is 20 cm. Calculate the total power of the combination of the lens.




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