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The wavelengths for the light of red and blue colours are nearly 7.8 × 10-7 m and 4.8 × 10-7 m respectively. Which colour has the greater speed in vacuum? - Physics

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Question

The wavelengths for the light of red and blue colours are nearly 7.8 × 10-7 m and 4.8 × 10-7 m respectively. Which colour has the greater speed in vacuum?
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Solution

In a vacuum, both colours have the same speed.

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Chapter 2: Light - Exercise 2.3 ii [Page 110]

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Frank Physics - Part 2 [English] Class 10 ICSE
Chapter 2 Light
Exercise 2.3 ii | Q 7 | Page 110
Selina Physics [English] Class 10 ICSE
Chapter 6 Spectrum
EXERCISE - 6 (A) | Q 12. (a) | Page 137
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