01 What effect may a light source very close to an object have on its cast shadow?
Answer and explanation
Correct answer: A. The shadow may be larger with greater edge variation
Explanation: The governing concept is the geometry of light rays. When a light source is close, rays spread out noticeably from it, so the object can project a larger shadow and the edge may change in softness or shape across the surface. Option A is correct. The object’s proportions do not change, the shadow does not vanish, and an ellipse does not automatically become a circle.