ICSE Class 10 Physics 2020 Solved Paper
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The wave length for the light of red and blue colours are nearly 7.8 × 10 − 7 m 4.8 × 10 − 7 m
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Question : 15
Total: 67
Which colour has the greater speed in a vaccum?
Solution:
Both red and blue colours have equal speed in a vacuum.
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