Question

1) define the following terms
a)mirror. b)lens.​

Answer 1

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A mirror is an object that reflects an image. Light that bounces off a mirror will show an image of whatever is in front of it, when focused through the lens of the eye or a camera. Mirrors reverse the direction of the image in an equal yet opposite angle from which the light shines upon it

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. ... Lenses are made from materials such as glass or plastic, and are ground and polished or molded to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing.

Answer 2

Answer:

Mirror:-

A polished or smooth surface (as of glass) that forms images by reflection.

Lens:-

A lens is a piece of a refracting medium bounded by two surfaces, at least one of which is a curved surface.