# What is the radius of curvature of the flat side of a plano convex lens?

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## What is the radius of curvature of a flat lens?

radius of curvature for a flat surface is infinity. the larger the radius of curvature, the flatter the surface will appear.

## What is the focal length of plano convex lens when its radius of curvature of the surface is R and N is refractive?

Find the focal length of plano convex lens, when its radius of curvature of the surface is R and n is the refractive index of the lens? ⇒1f=(n-1)R⇒f=R(n-1).

f=R/2.

## What is a plano convex lens?

Plano-convex lenses are positive focal length elements that have one spherical surface and one flat surface. These lenses are designed for infinite conjugate (parallel light) use or simple imaging in non-critical applications. These optic lenses are ideal for all-purpose focusing elements.

## How do you increase radius of curvature?

Or, we could go the other way, if we decrease the amount of curvature, we get an increase in the amount of curvature radius. In any event, when one factor moves, the other factor goes in an opposite direction.

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## What is the radius of curvature of double convex lens?

The radii of curvature of the surfaces of a double convex lens are 20 cm and 40 cm respectively, and its focal length is 20 cm.

f=R/2.

## How do you identify a convex lens?

The structure of convex lens is like, thicker at the centre and thinner at the edges. Conversely, the concave lenses are thinner at the centre and thicker at its edges, in structure. The focal length of a convex lens is positive, while that of a concave lens is negative.

## Is the power of a lens is 2D what is its focal length?

Power of a lens is -2D, negative sign indicates it is a Concave lens. Focal length (in meters)=1/power of the lens, thus focal length=1/2=0.5m=50cm. Answer: Since, Power P = -2 D, Focal length f = 100/(-2) = – 50 cm.