JEE Main 2021 — Wave Optics Question with Solution
From: JEE Main 2021 (Online) 20th July Evening Shift
Question
With what speed should a galaxy move outward with respect to earth so that the sodium-D line at wavelength 5890 is observed at 5896 ?
Choose an option
Show full solutionCorrect option: A
Correct answer
A306 km/sec
Step-by-step explanation
is small compared to 1
km/s
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This is a previous-year question from JEE Main 2021, covering the Wave Optics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.