Question

Physics case study question
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Answer 1

Answer:

i) b) 25cm

ii) d) 100,60,40,30,24

iii) c) 40cm

iv) c)4f

v) d) betweem F and O

Answer 2

Ur Answer:-

The distance of the principal Focus (F1 or F2) from the optical centre 'O' of a lens is called its focal length. It is usually denoted by letter 'f '. Since a convex lens has two principal foci, so it has two focal lengths, known as first focal length (f1) and the second focal length (f2).

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