Question

# A diffraction grating has $15,000$ rulings in its $1.9 \mathrm{~cm}$ width. Determine its resolving power in first and second orders.

Solution

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Step 1
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Givens

• $N=15\cdot 10^3$ - the total number of grating slits

Required

• $R_1$ and $R_2$ - the resolving powers in the first and second order, respectively

How can we use the known expression for the resolving power in order to solve this problem?