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A bi-convex lens is formed with two thin plano-convex lenses as shown in the figure. Refractive index n of the first lens is 1.5 and that of the second lens is 1.2. Both the curved surface are of the same radius of curvature R = 14 cm. For this bi-convex lens, for an object distance of 40 cm, the image distance will be

Romio , 11 Years ago
Grade 10
anser 1 Answers
Arun Kumar
Hello Student,

P=(1.5-1)(1/14-0)+(1.2-1)(0-1/(-14))=1/20
f=+20cm
1/v-1/(-40)=1/20
v=40cm
Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty
Last Activity: 11 Years ago
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