A diffraction grating is to be used to find the wavelength of the emission spectrum of a gas. The grating spacing is not known, but light of a known wavelength of $632.8 \mathrm {~nm}$ is deflected by $43.2 ^ { \circ }$ in the second order by this grating. Light of the wavelength to be measured is deflected by $34.9 ^ { \circ }$ in the second order. What is the wavelength of the light that is to be measured?

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The Answer of A diffraction grating is to be used to find the wavelength of the emission spectrum of a gas. The grating spacing is not known, but light of a known wavelength of $632.8 \mathrm {~nm}$ is deflected by $43.2 ^ { \circ }$ in the second order by this grating. Light of the wavelength to be measured is deflected by $34.9 ^ { \circ }$ in the second order. What is the wavelength of the light that is to be measured?

A Diffraction Grating Is to Be Used to Find the Wavelength