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Why may the background seen through a transparent glass appear slightly altered rather than perfectly straight?

Answer and explanation

Correct answer: Because of refraction of light through glass

Refraction is the change in direction of light when it passes between materials such as air and glass. The curved or thick surfaces of a glass can bend the light rays carrying the background image, making a straight line behind it look shifted, enlarged, or slightly distorted. Paper texture, cast shadow, and symmetry cannot bend those rays or create this optical displacement.

Related tags

Object ObservationGlassTransparencyRefractionDrawing BasicsArt EducationClass 9 Mcq

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