Adouble-slit interference pattern is observed on a screen 1.0 m behind two slits spaced 0.30 mm apart. from the center of one particular fringe to the center of the ninth bright fringe from this one is 1.6 cm. what is the wavelength of the light? [530nm]

The wavelength of the light is 530 nm.

Explanation:

Given that,

Distance D= 1.0 m

Distance between slits d= 0.30 mm

Number of fringe = 9

Width = 1.6 cm

We need to calculate the angle

Using formula of angle

We need to calculate the wavelength of the light

Using formula of wavelength

Put the value into the formula

Hence, The wavelength of the light is 530 nm.