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Q.

Two identical strings X and Z made of same material have tension TX and TZ in them. If their fundamental frequencies are 450Hz and 300Hz respectively, then the ratio TX/TZ is

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a

2.25

b

1.5

c

0.44

d

1.25

answer is A.

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Detailed Solution

f=V2l=12lTμFor  identical strings fxfz=TXTZ ⇒TXTZ=4503002=2.25
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Two identical strings X and Z made of same material have tension TX and TZ in them. If their fundamental frequencies are 450Hz and 300Hz respectively, then the ratio TX/TZ is