Physics, asked by bishtrohit5647, 11 months ago

Two lenses a and b have focal length +20cm and -10cm respectively [a]what is the type of lens a and b?

Answers

Answered by Riteshkukkar

0

Answer:

a is convex lens and b is concave lens

Answered by prpn001f

0

Answer:

a is convex

b is concave

Explanation:

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