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Electrostatics

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

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Profile image of raju nagula
8 Years agoGrade
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1 Answer

Profile image of Arun
8 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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