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01-04-2024
Physics

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A wire of length L and mass 6 × 10¯³ kgm¯¹ per unit length is put under the tension of 540 N. Two consecutive frequencies that it resonates at are: 420 Hz and 490 Hz. Then L in meter is

a. 8.1 m
b. 2.1 m
c. 1.1 m
d. 5.1 m

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