One surface of a lens is convex and the other is concave. If the radii of curvature are $r_{1}$ and $r_{2}$ respectively, then the lens will be convex if

r₁ > r₂

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r₁ = r₂

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r₁ < r₂

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r₁ = 1/r₂

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Solution

The correct option is C
r₁ < r₂

The lens will be convex if $r_{1}$ < $r_{2}$ .

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One surface of a lens is convex and the other is concave. If the radii of curvature are r1 ​and r2 ​respectively, then the lens will be convex if

The correct option is C r1 < r2 ​ The lens will be convex if r1 < r2.

One surface of a lens is convex and the other is concave. If the radii of curvature are $r_{1}$ and $r_{2}$ respectively, then the lens will be convex if

The correct option is C
r₁ < r₂

The lens will be convex if $r_{1}$ < $r_{2}$ .