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In Newtons Ring Experiment, First red colour is used and then blue. Which set of rings will have larger diameters?
written 9.8 years ago by gravatar for teamques10 teamques10 ★ 70k •   modified 9.8 years ago

Mumbai university > FE > SEM 2 > Applied Physics II

Marks: 3M

Year: May 2013
advanced engineering physics
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written 9.8 years ago by gravatar for teamques10 teamques10 ★ 70k •   modified 9.8 years ago

The expression for diameter in Newton’s Ring experiment is given by:-

$D_n = \sqrt{(2n - 1) 2 λ R}$ .....For bright ring

$D_n = \sqrt{4nλR}$ .....For dark ring

$D_n ∝ \sqrt{λ}$

Red colour has greater wavelength than blue colour, the diameter of red coloured ring will be greater than blue coloured ring.
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