If the spacing between the lines is 2000 nm, and the angle of the second-order ray is 48.5°, what is the wavelength of the light? a. 1500 nm b. 1000 nm c, 750 nrn d. 2000 nnm e. we can't determine the wavelength from the information.

Wavelength of the light is 750 nm.

Explanation:

Given that,

Spacing between the lines,

Order of the grating, n = 2

The second order is formed at an angle of 48.5°. The equation of diffraction grating is given by :

or

So, the wavelength of the light is 750 nm. Hence, this is the required solution.                                                                

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.