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Question

During a sunny day, the number plate of a car travelling on the highway seems to flicker for a person walking at a distance in the opposite direction. Which of the following is the reason?

A
Refraction
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B
High speed of car
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C
Hypermetropia
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D
High separation between car and person
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Solution

The correct option is A Refraction
  • The air in contact with the road is hotter and less dense than the air above it.
  • Since physical conditions of the refractive medium are not stationary, the light coming from this medium appears to flicker.
  • So, the image of the object flickers in our eyes.

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