Calculate the angle for the third-order maximum of 580-nm wavelength yellow light falling on double slits separated by 0.100 mm.

The angle of diffraction is 0.498°

Explanation:

To calculate the angle of diffraction, we use the equation given by Bragg, which is:

where,  

n = order of diffraction = 3

= wavelength of the light =    (Conversion factor:   )

d = spacing between the crystal planes = 0.100 mm =       (Conversion factor:  1 m = 1000 mm)

= angle of diffraction = ?

Putting values in above equation:

Hence, the angle of diffraction is 0.498°

1/0.14nm = 10^10/1.4 a lot