Electromagnetic Waves - Result Question 20
20. Which colour of the light has the longest wavelength?
[2019]
(a) red
(b) blue
(c) green
(d) violet
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Answer:
Correct Answer: 20. (a)
Solution:
- (a) $\lambda _{\text{Red }}>\lambda _{\text{Green }}>\lambda _{\text{Blue }}>\lambda _{\text{Violet. }}$ Red has the longest wavelength.
