Interference Of Waves

Question 1

Resultant Amplitude

Answer 1

A = (a1^2 + a2^2 + 2a1a2cosphi)^1/2

Question 2

Tan theta=?

Answer 2

A2sinphi/(a1+a2)

Question 3

Constructive interference condition

Answer 3

Phi = 0 or 2n||

Question 4

Destructive interference condition

Answer 4

Phi= (2n-1)||

Question 5

Max amplitude

Answer 5

Amx = (a1+a2)^2

Question 6

Max intensity

Answer 6

Imax = [ (I1)^1/2 + (I2)^1/2]^2

Question 7

Minimum amplitude :

Answer 7

Amin = (A1 ~ A2)^2

Question 8

Minimum intensity :

Answer 8

Imin = [ (I1)^1/2 - (I2)^1/2]^2