JEE Main 20209 Jan, Evening shiftPhysicsEasyOscillations and Waves185× since 2002
A 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 :