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Q. 37

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 956

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Short Answer

shows the light intensity on a screen behind a double slit. The slit spacing is and the screen is behind the slits. What is the wavelength (in ) of the light?

The light's wavelength is

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Step by Step Solution

Step: 1 wavelength light:

The wavelength of visible light is to , and this is where we understand about the widths of multiple colors in the visible spectrum of light.

Step: 2 Finding the width:

As per the diagram,since the width of four fringes is , the width of one fringe will be

We understand that the fringe thickness in the double-slit experiment is calculated as

Step: 3 Obtaining the wavelength value:

The wavelength by

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