# Problem: Under which conditions is constructive interference observed at a point on the target screen in a two slit experiment with waves? a. When waves from each slit arrive in-phase.b. When waves from each slit arrive 90° out of phase.c. When waves from each slit do not arrive at the point.d. When waves from each slit arrive at different times.e. Constructive interference is never observed.

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Under which conditions is constructive interference observed at a point on the target screen in a two slit experiment with waves?

a. When waves from each slit arrive in-phase.

b. When waves from each slit arrive 90° out of phase.

c. When waves from each slit do not arrive at the point.

d. When waves from each slit arrive at different times.

e. Constructive interference is never observed.

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