Question

The focal length of the Plano convex lens is 2R where R is the radius of curvature of the surface ,then the refractive index of the material of lens is.​

Answer 1

$<b>$ ➡The focal length of the plane convex lens is 2R where R is the radius of cu. The focal length of the plane convex lens is 2R where R is the radius of curvature of the surface then the refractive index of the material of the lens is.
$<marquee>$
⭐MAY IT WILL HELP YOU ⭐

Answer 2

Answer:

focal length of plano covex lens

(f) = R/n-1

here given f=2R

so, 2R = R/n-1

2= 1/n-1

n-1 = 1/2

n= 1+ 1/2

n=1.5

this is the answer....