Chapter 9- Interference Of Waves

Question 0

Constructive interference

Answer 0

When waves at together to create a larger wave

Question 1

The principle of linear superposition

Answer 1

When two or more waves simultaneously occupy the same position in a medium the resultant wave is the sum of the individual waves.

Question 2

Destructive interference

Answer 2

When the waves add out of phase a smaller wave is created

Question 3

Beats

Answer 3

Two sinusoids of slightly different frequencies add together constructively and destructively,The periodic fluctuations in amplitude are termed beats

Question 4

With different sound sources when will the waves interfere constructively?

Answer 4

When the source-to-listener distances differ by whole number wavelengths

d1-d2= wavelength • n (#)

Question 5

With different sound sources when will the waves interfere destructively?

Answer 5

When the source-to-listener distances differ by an odd number of half wavelengths

D1-d2= (2n-1) • (wavelength)/2