MHT CET202410 May 2024Morning ShiftPhysicsOscillationsActual
A musical instrument X produces sound waves of frequency n and amplitude A . Another musical instrument Y produces sound waves of frequency n 3 . The waves produced by x and y have equal energies. The amplitude of waves produced by Y will be
Options
- A3 A
- B4 A
- C2 A
- D1 ~A
Correct answer
A. 3 A
Step-by-step solution
Energy of oscillations is given by E= 1 2 m ^2 A^2 But , =2 n E n ^2 ~A ^2 As the energies are equal, aligned & n_X^2 A_X^2=n_Y^2 A_Y^2 & n A= n 3 A_Y ...(given) & A_Y A = n n / 3 . & A_Y=3 A aligned