Question

Newton rings of observed in the reflected light of wavelength 5900 anstroms the diameter of the 10th dark ring is 0.5 find the radius of curvature of length used

Answer 1

Answer:

The national average salary for a Goldsmith employee in the United States is $31,778 per year. Employees in the top 10 percent can make over $52,000 per year, while employees at the bottom 10 percent earn less than $19,000 per year.

Answer 2

Given:

The wavelength of reflected light (λ) = 5900Angstrom

Diameter of the 10th dark ring = 0.5cm

To find:

The radius of curvature of the lens

Explanation:

The wavelength of reflected light (λ) = 5900Angstrom

1 Angstrom = $10^{-10} m$

∴ The wavelength of light = $5900*10^{-10} m$

Diameter of 10th Newton's dark ring ($D_{10}$) = $0.5cm$ ⇒ $0.5 * 10^{-2} m$

Formula= $D^{2} _n$ = 4nλR

To find Radius of curvature of lens,

$R= \frac{D^{2}_n }{4*n*wavelength of light}$

=       $\frac{(0.5*10^{-2})^{2} }{4*10*5900*10^{-10} }$

=        $\frac{0.25*10^{-4} }{236*10^{-7} }$

=        $1.059 m$

∴The Radius of Curvature of the lens used is 1.059m