Question

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

Answer 1

Answer: (D)

Interference is not possible between independent waves.