What is the effect of increasing the wavelength of light used in a double-slit e

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Question: What is the effect of increasing the wavelength of light used in a double-slit experiment on the fringe separation?

Options:

Correct Answer: Fringe separation increases

Solution:

Increasing the wavelength (λ) increases the fringe separation (β), as β is directly proportional to λ.

What is the effect of increasing the wavelength of light used in a double-slit experiment on the fringe separation?

What is the effect of increasing the wavelength of light used in a double-slit experiment on the fringe separation?

Step 1: Understand what a double-slit experiment is. It involves shining light through two narrow slits to create an interference pattern on a screen.
Step 2: Know that the interference pattern consists of bright and dark fringes (lines) on the screen.
Step 3: Learn that the distance between these fringes is called fringe separation (β).
Step 4: Recognize that fringe separation (β) depends on the wavelength of the light (λ) used in the experiment.
Step 5: Remember the relationship: as the wavelength (λ) increases, the fringe separation (β) also increases.
Step 6: Conclude that if you increase the wavelength of the light, the fringes on the screen will be further apart.

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