At what angle does a diffraction grating produce a second-order maximum for light having a first-order maximum at 20.0 degrees?

At 43.2°.

Step-by-step explanation:

To find the angle we need to use the following equation:

Where:

d: is the separation of the grating

m: is the order of the maximum

λ: is the wavelength

θ: is the angle              

At the first-order maximum (m=1) at 20.0 degrees we have:

Now, to produce a second-order maximum (m=2) the angle must be:

Therefore, the diffraction grating will produce a second-order maximum for the light at 43.2°.    

I hope it helps you!                                                        

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step-by-step explanation:

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