Question

2.
In the experimental formula of Newton's ring experiment, if we increase
the value of radius of curvature of plano-convex lens, then the wavelength will
(C0-1. PO-2, BT-5)
Select one
a Remains unchanged
b. First increase and then decrease
increase​

Answer 1

Answer:

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Answer 2

Newton's ring experiment shows how the interference pattern is observed by the reflection of light between two surfaces , a spherical one ( plano convex lens ) and a adjecent touching flat surface .

The wavelength of the monochromatic light ( sodium ) in this experiment is given by the formula ,  

λ = $\frac{D^{2}_{m+p} - D^{2}_{m} }{4pR}$

• $D^{} _{m+p}$ is the diameter of the (m+p)th dark ring
• $D_{m}$ is the diameter of $m^{th}$ dark ring

From the equation it is clear that if the radius of curvature of plano convex lens is increased then the wavelength of the light will decrease eventually .