NumericalModerate1 mark
Why is the ratio of the velocities of light of wavelengths 4000 Å and 8000 Å in vacuum 1 : 1 ?
Topic: Speed of light and wavelength in vacuum
Previous-year question practice database
Answer
Exam answer
Because all wavelengths of electromagnetic radiation travel with the same speed in vacuum.
Explanation
Hence v₄₀₀₀Å : v₈₀₀₀Å = 1:1.
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