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Contact [7]
3 years ago
14

What is the focal length of a lens

Physics
1 answer:
goldenfox [79]3 years ago
4 0

Answer:

The focal length of a lens is refers to the distance from the center of the lens to the principal foci.

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part 1

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part 2

megaton of TNT (Mt) =4.2 x 10¹⁵ J

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