Calculate the angle for the third-order maximum of 580-nm wavelength yellow light falling on a diffraction grating with 500 lines/mm.

60.46°

Explanation:

Given that, the wavelength of yellow light which is falling on grating is,

The angle is of the order of 3 means m=3.

And number of lines per mm is,

Therefore the condition of maxima,

Here,

And for third order maxima, m=3

Therefore,

Therefore, the angle for third order maxima is 60.46°.

reserve is the answer