Question

what is the power of lens? Write SI unit of power of lens and write equation showing difference between the power of lens and focal length .




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Answer 1

the German economy was the worst hit by the economic resources by 1932 industrial production was reduced to 40% of the 1929 level workers lost their jobs or they paid reduce which is the number of on employed dost and unprecedented 6 million.

hope it helps uh..

Answer 2

Power of lens is defined as the reciprocal of the focal length of the lens expressed in meter.

SI unit of power is Dioptre denoted by D.

focus length of lens:

=40 cm=0.4 m

Since the focal length is positive,

so, it is a convex lens.