A stretched sonometer wire resonates at a frequency of 350 Hz and at the next higher frequency of 420 Hz. The fundamental frequency of this wire is
Text Solution
Verified by ExpertsThe correct answer is:
C
= 350 and 
= 420
∴ 
= 
⇒ n = 5
∴ 
= λ
⇒ λ λ = 
= 
⇒ 
= 
⇒ f´ = 
= 70 Hz
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