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College Physics (Urone)
Found in: Page 995

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Short Answer

What is the advantage of a diffraction grating over a double slit in dispersing light into a spectrum?

The light splits more easily because the slit widths are so narrow.

See the step by step solution

Step by Step Solution

Step 1: Define spectrum

When light passes through a prism or droplets of water, it produces a spectrum, which is a range or band of colors.

Step 2: Explanation

We get a bigger number of matches on the cover if we use a diffraction grating with multiple slits, i.e., a larger number of interference minima or maxima. Since there is constructive interference in the maxima, they are regarded as lighter components.

Also, since the slit widths are so narrow, the light splits more easily, allowing us to view the full range of colors.

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