Wave optics
here he said Rays will interfere constructively but in the solution he just draws them parallel , the rays done even meet , shouldnt the rays converge at sensor
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@Gyro Gearloose
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.@Gyro Gearloose