MCQEasy1 mark
Select the correct option for each of the following questions
The ratio of velocities of light of wavelength 400 nm and 800 nm in a vacuum is: (a) 1:1 (b) 1:2 (c) 2:1 (d) 1:3
Topic: Speed of electromagnetic waves in vacuum
Previous-year question practice database
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Pick an option and check your answer. The full worked answer is below either way.
Answer
Exam answer
(a) 1 : 1.
Explanation
All wavelengths travel at the same speed in vacuum.
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