The figure shows two point sources of light, A and B, that emit light waves in phase with each other.A is distant 3$\lambda$ from point P.B is distant 5$\lambda$from P.($\lambda$ is the wavelength.) The phase difference between the waves arriving at P from A and B is:
A)0 rad.
B)( $\pi$ rad.)
C)2 $\pi$rad.
D)3 $\pi$ rad.
E)4 $\pi$ rad.

Question

The figure shows two point sources of light, A and B, that emit light waves in phase with each other.A is distant 3$\lambda$ from point P.B is distant 5$\lambda$from P.($\lambda$ is the wavelength.) The phase difference between the waves arriving at P from A and B is: 
A)0 rad. 
B)( $\pi$ rad.) 
C)2 $\pi$rad. 
D)3 $\pi$ rad. 
E)4 $\pi$ rad.

Quizplus · Accepted Answer

The Answer is E

The Figure Shows Two Point Sources of Light, a and B