Question

When a person uses a convex lens as a simple magnifying glass, the object must be placed at a distance

• A. less than one focal length
• B. more than one focal length
• C. less than twice the focal length
• D. more than twice the focal length

Answer 1

The correct option is A less than one focal length

When a person uses a convex lens as a simple magnifying glass thenthe object must be placed at a distance less than the focal length . A converging lens is sometimes used as a magnifying glass. The general region where the object must be placed in order to produce the magnified effect, when parallel rays of light pass through a convex lens the refracted rays converge.The rays of light from the person are converged by the convex lens forming anmagnifying glass is a convex lens which produces a magnified (larger) to be observed the distance between the objectand the lens must be shorter.