Question

radius of the 14th Newton's ring is Imm, when light of
anoth 5.89 x10 m is used. What is the radius of curvature of
the lower surface of the lens used?

Answer 1

Answer:

Radius of Curvature [R] = 2 * radius of ring [r] * radius of ring [r] / Wavelength [L] * (2 * Number of Ring [N] -1)

implies => 2 * 2 * 2 / 8 * 10^-4 * ( 2 * 14 - 1)

=307.307 mm