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Friday, 9 October

JEE Main 2021 · PhysicsMultiple choiceSingle correctEasyRecall

JEE Main 16 March 2021, Shift 2, Physics Q4

Question 4 of 90 in this shift, Physics question 4 of 30, Section A.

Red light differs from blue light as they have :
  1. (1)Same frequencies and same wavelengths
  2. (2)Different frequencies and different wavelengthsOfficial answer
  3. (3)Same frequencies and different wavelengths
  4. (4)Different frequencies and same wavelengths

Official answer

Option 2

NTA final key.

Chapter
Wave Optics
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.