Answer:
The wavelength of the light is 633 nm.
Explanation:
Given that,
Distance between the two slits d= 0.025 cm
Distance between the screen and slits D = 120 cm
Distance between the slits y= 1.52 cm
We need to calculate the angle
Using formula of double slit

Where, y = Distance between the slits
D = Distance between the screen and slits
Put the value into the formula



We need to calculate the wavelength
Using formula of wavelength

Put the value into the formula




Hence, The wavelength of the light is 633 nm.