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प्रश्न
Which of the following statements is correct regarding the propagation of light of different colours of white light in air?
विकल्प
Red light moves fastest
Blue light moves faster than green light
All the colours of the white light move with the same speed
Yellow light moves with the mean speed as that of the red and the violet light
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उत्तर
All the colours of the white light move with the same speed
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