In a Young's double-slit interference apparatus,by what factor is the distance between adjacent light and dark fringes changed when the wavelength of the source is doubled?
A)1/4
B)1/2
C)1
D)2
E)4

Question

In a Young's double-slit interference apparatus,by what factor is the distance between adjacent light and dark fringes changed when the wavelength of the source is doubled?
A)1/4
B)1/2
C)1
D)2
E)​4

Quizplus · Accepted Answer

The distance between adjacent light and dark fringes in a Young's double-slit experiment is directly proportional to the wavelength of the light used. Therefore, if the wavelength is doubled, the distance between the fringes also doubles.

In a Young's Double-Slit Interference Apparatus,by What Factor Is the Distance