Four light waves are represented by (i) `y=a_1sin omegat` (ii) `y=a_2 sin (omega t+varphi)` (iii) `y=a_1sin 2 Omega t` (iv) `y=a_2sin 2(omegat+varphi)` Interference fringes may be observed due to superposition ofA. (i) and (iii)B. (ii) and (iv)C. (i) and (ii)D. (iii) and (iv)

Four light waves are represented by (i) `y=a_1sin omegat` (ii) `y=a_2

1.	Four light waves are represented by (i) `y=a_1sin omegat` (ii) `y=a_2 sin (omega t+varphi)` (iii) `y=a_1sin 2 Omega t` (iv) `y=a_2sin 2(omegat+varphi)` Interference fringes may be observed due to superposition ofA. (i) and (iii)B. (ii) and (iv)C. (i) and (ii)D. (iii) and (iv)
Answer» Correct Answer - A::B For interference, frequency of two waves must be same and phase difference must be constant, the amplitudes may be different.

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Four light waves are represented by (i) `y=a_1sin omegat` (ii) `y=a_2 sin (omega t+varphi)` (iii) `y=a_1sin 2 Omega t` (iv) `y=a_2sin 2(omegat+varphi)` Interference fringes may be observed due to superposition ofA. (i) and (iii)B. (ii) and (iv)C. (i) and (ii)D. (iii) and (iv)

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