PhysicsEasy85×since 2002Q8551A wire of length L and mass per unit length 6.0 × 10^–3 kgm^–1 is put under tension of 540 N. Two consecutive frequencies that it resonates at are : 420 Hz and 490 Hz. Then L in meters is :A5.1 mB2.1 mC1.1 mD8.1 mCheck answerSkip