Question

2.Double convex lenses are to be manufactured from a glass of refractive index 1.55.

with both faces of same radius of curvature.what is the radius of curvature required if

the focal length of the lens is to be 20cm?​

Answer 1

Answer:

a double convex lens is made of glass of refractive index 1.55 with both faces of same radius of curvature.... Hence, the radius of curvature of the double convex lens is 22 cm.

Answer 2

Answer:

aacha aise bat mai tujh se senior hu be isliye pyar se babu boli thi samjhe n jyada shanty mt ho