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A lens is a portion of a transparent medium bounded by two surfaces and
one of these surfaces is essentially spherical. It is used to converge or
diverge the light incident on it. Power of a lens is the measure of its ability
to converge or diverge the light incident on it. Power of a lens depends on
the refractive index of the material of lens with respect to the surrounding
medium and the radii of curvature of its two surfaces.
(a)
55/6/3
The power
of a convex lens
(i) increases when the lens is dipped in water.
(ii)
increases when the wavelength of incident light decreases.
decreases when another convex lens is placed in contact with
(iii)
it.
(iv) increases
increases
when the lens is cut into two identical
plano-convex lenses.

Answer :

onyebuchinnaji

(iv) The power of a convex lens increases when the lens is cut into two identical plano-convex lenses.

What is power of a lens?

The power of a lens is defined as the reciprocal of its focal length. It is measured in diopters.

Factors affecting the power of a lens

The power of a lens depends on the focal length of the lens which depends on;

  • the refractive index of the glass from which it is made, and
  • on the curvature of its two surfaces

P = 1/f

where;

  • P is power of the lens
  • f is focal length of the lens

When the focal length decreases, the power of the lens increases.

Thus, the power of a convex lens increases when the lens is cut into two identical plano-convex lenses.

Learn more about convex lens here: https://brainly.com/question/28039799

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