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Question: Answered & Verified by Expert
A standing wave having 3 nodes and 2 antinodes is formed between two atoms having a distance 1.21 A∘ between them. The wavelength of the standing wave is
PhysicsWaves and SoundJEE Main
Options:
  • A 1.21 A∘
     
  • B 1.42 A∘
  • C 6.05 A∘
     
  • D 3.63 A∘
Solution:
2078 Upvotes Verified Answer
The correct answer is: 1.21 A∘
 
The given standing wave is shown in the figure




As the length of loop or segment is λ2

So the length of 2 segments is 2λ2

∴2λ2=1.21 A∘

⟹λ=1.21 A∘

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