Multiple choice

Formation of shadow proves that ____.

  1. light moves in a straight line

  2. light is an eletromagnetic wave

  3. light is a particle

  4. light does not undergo diffraction
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Shadows form because light travels in straight lines and cannot bend around opaque objects. When an object blocks light, a dark region (shadow) forms behind it where light cannot reach, demonstrating rectilinear propagation of light.

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