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A string fixed at both ends has consecut...

A string fixed at both ends has consecutive standing wave modes for which the distances between adjacent nodes are 18 cm` and `16 cm` respectively. The minimum possible length of the string is:

A

150 cm

B

144 cm

C

140 cm

D

142 cm

Text Solution

Verified by Experts

The correct Answer is:
B
Let length of string = l

18 n = l
`16 (n + 1) = l`
n = 8
l = 144 cm
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