Assertion :If P₁ and P₂ be the powers of two thin lenses located coaxially in a medium of refractive index μ at a distance d,
then the power P of the combination is P=P₁+P₂−P₁P₂d/μ Reason: Because for above given system equivalent focal length is given by F=f₁f₂/f₁+f₂−d/μ and P=1/F.
A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C. Assertion is correct but Reason is incorrect
D. Assertion is incorrect but Reason is correct
