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Good morning sir..
How to write formula for this question.
Explainit.

raju nagula , 6 Years ago
Grade
anser 1 Answers
Arun

Last Activity: 6 Years ago

Dear Raju
 
When a string is plucked in middle, it vibrates with nodes at end and anti node in middle. Therefore
λ/2 = length
λ = 2 × length = 2 × 40 = 80 cm
The correct option is B.

Regards
Arun (askIITians forum expert)

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