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easyMCQNEET 20192026Physics
1 attempts0% success rate4 marks (−1)

Pick the wrong answer in the context with rainbow.

  1. A
    When the light rays undergo two internal reflections in a water drop, a secondary rainbow is formed
  2. B
    The order of colours is reversed in the secondary rainbow
  3. C
    An observer can see a rainbow when his front is towards the sun
  4. D
    Rainbow is a combined effect of dispersion refraction and reflection of sunlight

Solution & Step-by-step Explanation

[Image showing the relative positions of the sun, raindrops, and the observer for a rainbow]Secondary rainbows are indeed formed by two internal reflections.The color order is reversed in secondary rainbows (Violet on top, Red on bottom).Wrong statement: To see a rainbow, the sun must be behind the observer. Thus, the observer's back is toward the sun, not his front.Rainbows result from refraction, dispersion, and total internal reflection.

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Try it yourself before checking the explanation above.

Pick the wrong answer in the context with rainbow.
A
When the light rays undergo two internal reflections in a water drop, a secondary rainbow is formed
B
The order of colours is reversed in the secondary rainbow
C
An observer can see a rainbow when his front is towards the sun
D
Rainbow is a combined effect of dispersion refraction and reflection of sunlight

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