Question

Indicate true or false in each of the following statements:

True False  Two identical waves destructively interfere if their phase difference is 7π radians
True False  Destructive interference occurs when the phase difference of two otherwise identical waves is 2π or multiples thereof.
True False  Two identical waves constructively interfere if their phase difference is 2π radians
True False  Two identical waves destructively interfere if the difference in their travel time is zero.
True False  When the peaks of two identical waves coincide their sum is a wave that has four times the amplitude of each of the waves.

Answer 1

Indicate true or false in each of the following statements:

False : Two identical waves destructively interfere if their phase difference is 7π radians

When phase difference is an odd multiple of π destructive and even multiples of π causes constructive intereference

False. : destructive interference occurs when the phase difference of two otherwise identical waves is 2π or multiples thereof.
True : Two identical waves constructively interfere if their phase difference is 2π radians
False : Two identical waves destructively interfere if the difference in their travel time is zero.
False : When the peaks of two identical waves coincide their sum is a wave that has four times the amplitude of each of the waves.