question_answer

Six waves of equal frequency 50 Hz and having amplitudes 8 cm, 12 cm, 6 cm, 3 cm, 17 cm and 12 cm reach at point O with successive phase difference of \[\pi /3\]. Amplitude of the resultant wave after superposition is

A)  8 cm                                     

B)  11 cm

C)  25 cm                  

D)  zero

Correct Answer: B

Solution :

The phasor diagram of waves   Resultant amplitude = 11 cm along\[{{A}_{6}}\].