In a Newton’s rings experiment, light of wavelength λ and a lens of radius of curvature R are used. The difference in diameters of 25th and 16th dark rings is:

In a Newton’s rings experiment, light of wavelength λ and a lens of

1.	In a Newton’s rings experiment, light of wavelength λ and a lens of radius of curvature R are used. The difference in diameters of 25th and 16th dark rings is:
A.	\(4\sqrt {\lambda R}\)
B.	\(3\sqrt {\lambda R}\)
C.	\(2\sqrt {\lambda R}\)
D.	\(\sqrt {\lambda R}\)
Answer» D. \(\sqrt {\lambda R}\)

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In a Newton’s rings experiment, light of wavelength λ and a lens of radius of curvature R are used. The difference in diameters of 25th and 16th dark rings is:

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