Interferance And Diffraction

Question 1

The principle of Superposition is…

Answer 1

The resultant displacement at any point is found by adding the displacement of each separate wave

Question 2

Interference is…

Answer 2

The adding together of waves

Question 3

Constructive interference

Answer 3

The addition of two waves producing the sum of the two waves not equal to zero

Question 4

Destructive interference

Answer 4

The addition of 2 waves produces Zero resultant displacement

Question 5

Anti - phase occurs when

Answer 5

Wave A has an equal and opposite displacement to Wave B

Question 6

Phase difference of 1 (lambda)

Answer 6

Is a phase difference of 360 degrees or 2 (pie) radians

Question 7

Explain how maxima and minima are formed

Answer 7

~interference or superposition
~reflection from metal plate
~two waves of the same wavelength or frequency
~maxima where waves interfere constructively
~minima where waves interfere destructively