Which statement describes characteristics of a concave lens?

a. a concave lens diverges light and curves inward.

b. a concave lens diverges light and curves outward.

c. a concave lens converges light and curves inward.

d. a concave lens converges light and curves outward.

A concave lens is a lens made from 2 spheres and it curves inwards. It is also known as diverging lens. It is called diverging lens because any ray falling on its surface is refracted and emerges on the other side been diverged.

The other type of a lens that curves outwards and converges light is called convex lens.

In this question the correct answer is:

A. A concave lens diverges light and curves inward.

a is the best answer your welcome

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia