Question

Write concave lens by using magnifying glass

Answer 1

Answer:

Explanation:

Magnifying glasses permeate the world in various sizes and forms, and have applications ranging from the comparatively mundane -- say, making otherwise difficult-to-read magazine text large enough to discern -- to the scientifically profound -- for example, bringing fantastically far-away elements of the universe into clear focus and allowing people to see microscopic organisms. Magnifying glasses work thanks to the simple principles of optical physics.

A magnifying glass is a convex lens. Convex means curved outward, like the underside of a spoon or the dome of a sports stadium. It is the opposite of concave, or curved inward. A lens is something that allows light rays to pass through it and bends, or refracts, them as they do so. A magnifying glass uses a convex lens because these lenses cause light rays to converge, or come together.

A magnifying glass, in effect, tricks your eyes into seeing what isn't there. Light rays from the object enter the glass in parallel but are refracted by the lens so that they converge as they exit, and create a "virtual image" on the retina of your eye. This image appears to be larger than the object itself because of simple geometry: Your eyes trace the light rays back in straight lines to the virtual image, which is farther from your eyes than the object is and thus appears bigger.

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