The path difference between the two waves y₁=a₁ ( t- 2 x ) and y₂=a₂ ( t- 2 x + ) is

Step-by-step solution

gathered (b) y₁=a₁ ( t- 2 x ) and y₂=a₂ ( t- 2 x + ) =a₂ ( t- 2 x + + 2 ) gathered So, phase difference = + 2 and path difference = 2 ( + 2 )