Science, asked by raninath, 1 year ago

derivation of the lens formula.​

Answers

Answered by asimnadaf3
2

Explanation:

ΔA’B’O) (equ. 1)

POOF=A′B′FB′ (from similar ΔPOF and ΔFB’A’)

∴ABOF=A′B′FB′ (from figure PO = AB)

ABA′B′=OFFB′ (equ. 2)

BOOB′=OFFB′ (from equ. 1 and equ. 2)

∴BOOB′=OFOB′−OF −u+v=+fv−f (substituting optical distance values)

∴−uv+uf=fv −1f+1v=1u (dividing by u,v and f on both the sides)

1v=1u+1f 1f=1v−1u

Therefore, this is known as Lens formula.

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