Answer:
The wavelength of the laser light is 572 nm.
Explanation:
Given that,
Distance between slit d= 0.22 mm
Distance of screen D= 0.5 m
Bright lines = 10
Width y= 1.3 cm
We need to calculate the wavelength
Using formula of young
[tex]y=\dfrac{n\lambda D}{d}[/tex]
[tex]\lambda=\dfrac{dy}{nD}[/tex]
Put the value into the formula
[tex]\lambda=\dfrac{0.22\times10^{-3}\times1.3\times10^{-2}}{10\times0.5}[/tex]
[tex]\lambda=5.72\times10^{-7}\ m[/tex]
[tex]\lambda=572\times10^{-9}\ m[/tex]
Hence, The wavelength of the laser light is 572 nm.
