A grating with a slit separation of 0.000003m, is producing a second order line

Question

A grating with a slit separation of 0.000003m, is producing a second order line on the screen at an angle of 25 degrees. The wavelength of light used is a. 500nm b. 450nm c. 700nm d. 634nm When an unpolarized light passes through a polarizer, the resulting polarized light is calculate d using a. Cosine square rule b. Kirchoff's rule c. One half rule d. Brewsters law. The blueness of the sky and the redness of sunsets and sunrises are due to the Light undergoing a. Reflection b. Scattering c. Dispersion. d. Refraction

Explanation / Answer

10)

We use equation for double slit,

dsin=m

0.000003*sin25 = 2*

= 634*10^-9 m = 634 nm

11)

One half rule

12)

Scattering of light

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