Newton's rings will be closer together if illuminated with
A)red light.
B)blue light.
C)white light.
D)none of the above

Question

Quizplus · Accepted Answer

The distance between the rings in Newton's rings experiment is given by the formula λR/2t, where λ is the wavelength of light, R is the radius of curvature of the lens, and t is the thickness of the air film between the lens and the glass plate. As blue light has a shorter wavelength than red light, the distance between the rings will be smaller for blue light, making option B the best choice.

Newton's Rings Will Be Closer Together If Illuminated with