.

 In a Newton's rings experiment, the diameter of the 10^{th} ring changes from 14 mm to 12.7 mm when a drop of water is introduced between the lens and the plate. Calculate the refractive index of the liquid?
 A planoconvex lens of radius 3 m is placed on an optically flat glass plate with acetone and is illuminated by monochromatic light. The diameter of the 8^{th} dark ring in the reflected system is 7.2 mm. Calculate the wavelength of the light used?
 A thin equiconvex lens of focal length 4 m and refractive index 1.5 is placed on an optically flat glass plate. Using a light of wavelength 546 nm, Newton's rings are viewed normally by reflection. What is the diameter of the fifth bright ring?
 Newtonâ€™s rings are observed by keeping a spherical surface of 100 cm radius on a glass plate with isopropyl alcohol. The wavelength of light used is 5880 A^{0}. If the diameter of the 15th bright ring is 0.60 cm, then diameter of 5th ring is?
 Monochromatic light with a wavelength of 648 nm shines down on a planoconvex lens atop a plate glass with kerosene. Newton's rings are seen when viewed from a superior position. (a) Radius of the 6thbright ring is 0.78cm. What is the radius of curvature of the lens? (b) Change the light to a greater wavelength; will the 6th ring be in the same position?
Cite this Simulator: 
..... 