If the wavelength of light used in a double-slit experiment is increased, what h

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Question: If the wavelength of light used in a double-slit experiment is increased, what happens to the distance between the fringes? (2022)

Options:

Correct Answer: Increases

Exam Year: 2022

Solution:

The fringe width is directly proportional to the wavelength. Therefore, increasing the wavelength increases the distance between the fringes.

If the wavelength of light used in a double-slit experiment is increased, what happens to the distance between the fringes? (2022)

If the wavelength of light used in a double-slit experiment is increased, what happens to the distance between the fringes? (2022)

Step 1: Understand what a double-slit experiment is. It involves shining light through two narrow slits to create a pattern of bright and dark lines called fringes on a screen.
Step 2: Know that the distance between these fringes is called fringe width.
Step 3: Learn that fringe width depends on the wavelength of the light used. Wavelength is the distance between two peaks of a wave.
Step 4: Remember that if the wavelength increases, the fringe width also increases. This means the fringes will be farther apart.
Step 5: Conclude that increasing the wavelength of light in the double-slit experiment results in a greater distance between the fringes.

Wavelength and Fringe Width – The relationship between the wavelength of light and the distance between interference fringes in a double-slit experiment.