Which of the following objects is non-luminous and becomes visible only when light from another source falls…

Which of the following objects is non-luminous and becomes visible only when light from another source falls on it?
  1. Firefly
  2. Glowing fluorescent tube
  3. Moon
  4. Sun

Solution

The Moon does not produce its own light; it reflects light coming from the Sun, making it a non-luminous object.

Asked in: Homi Bhabha Practice

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