JEE Main & Advanced
Physics
Wave Optics / तरंग प्रकाशिकी
Question Bank
Critical Thinking
question_answer
Four light waves are represented by (i) y = a1 sinw t (ii) \[y={{a}_{2}}\sin (\omega \,t+\varphi )\] (iii) \[y={{a}_{1}}\sin 2\omega \,t\] (iv) \[y={{a}_{2}}\sin 2(\,\omega \,t+\varphi )\] Interference fringes may be observed due to superposition of
A) (i) and (ii)
B) (i) and (iii)
C) (ii) and (iv)
D) (iii) and (iv)
Correct Answer:
D
Solution :
These waves are of same frequencies and they are coherent