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What is the percentage change in the ten...

What is the percentage change in the tension necessary in a somometer of fixed length to produce a note one octave lower (half of original frequency) than before?

A

0.25

B

0.5

C

0.67

D

0.75

Text Solution

Verified by Experts

The correct Answer is:
D
In Sonometer
`n alphasqrt(T)`
`n_(1)/(n_(2)) = 2 = sqrt((T_(1))/(T_(2)))`
`T_(2) = (T_(1))/(4)`
`(T_(1) - T_(2))/(T_(1)) xx100 = (T_(1) -(T_(1))/((4)/(T_(1))))`
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