A convex lens of focal length ‘f1’ and concave lens of focal length ‘f2’ are combined to have effective focal length ‘F’. This combination of lenses will behave like a concave lens, it:

Question:

A convex lens of focal length ‘f₁’ and concave lens of focal length ‘f₂’ are combined to have effective focal length ‘F’. This combination of lenses will behave like a concave lens, it:

Options :

(a) f1=f2
(b) f1<=f2
(c) f1>f2
(d) f1<f2

Answer :

Answer Steps :

step 1

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