Question

A stretched string is fixed at both its ends. Three
possible wavelengths of stationary wave patterns
that can be set up in the string are 90 cm, 60 cm
and 45 cm. The length of the string may be
(1) 80 cm
(2) 120 cm
(3) 90 cm
(4) 45 cm​

Answer 1

Answer:

90 is answer

Explanation:

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