Four independent waves are expressed as (i)\[{{y}_{1}}={{a}_{1}}\sin \omega t\] (ii)\[{{y}_{1}}={{a}_{2}}\sin 2\omega t\] (iii)\[{{y}_{3}}={{a}_{3}}\cos \omega t\]and (iv)\[{{y}_{4}}={{a}_{4}}\sin \,\,\left( \omega t+\frac{\pi }{3} \right)\] The interference is possible between
A)(i) and (iii)
B)(i) and (iv)
C)(ii) and (iv)
D)not possible at all
Correct Answer:
D
Solution :
Interference is not possible between independent waves.