-->

Mechanical Properties Of Solids

Question

In Young's double slit experiment with sodium vapour lamp of wavelength 589 nm and the slits 0.589 mm apart, the half angular width of the central maximum is

sin^-1(0.01)

sin^-1 (0.0001)

sin^-1 (0.001)

sin^-1 (0.1)

Solution

sin^-1 (0.001)

In Young's double slit experiment, half angular width is given by

sin θ = $\frac{λ}{d}$

= $\frac{589 \times 10^{- 9}}{0.589 \times 10^{- 3}}$

= 10^-3

⇒ θ = sin^-1 ( 0.001 )