Q. In a Newton's ring experiment, the wavelength of the light used is 6 × 10-5 cm and the difference of square of diameters of successive rings are 0.125 cm3. What will happen to this quantity if:
(i) The wavelength of light is changed to 4.5 ×10-5 cm.
Soln. Given: 6 × 10-3 cm
Difference of square of diameters of successive rings D2n+1 - D2n = 0.125 cm3.