Questions
The effective focal length of the lens combination shown in figure is – 60 cm. The radii of curvature of the curved surfaces of the plano– convex lenses are 12 cm each and refractive index of the material of the lens is 1.5. The refractive index of the liquid is
detailed solution
Correct option is D
1f=1f1+1f2+1f3 ; f=-60cm 1-60=1.5-112+μ1-1-212+1.5-112 1-5=1-2μ1+2 ; 2μ1=3+15=165 ; μ1=85=1.6Talk to our academic expert!
Similar Questions
Image of the sun is formed by a binconvex lens of focal length f. The image is a circular patch of radius r and is formed on the focal plane of the lens. Choose the correct statement from the following
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