In a double-slit experiment, if the screen is moved further away from the slits,

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Question: In a double-slit experiment, if the screen is moved further away from the slits, what happens to the fringe pattern?

Options:

Correct Answer: Fringes become wider

Solution:

Moving the screen further away increases the distance (D) in the fringe width formula, causing the fringes to become wider.

In a double-slit experiment, if the screen is moved further away from the slits, what happens to the fringe pattern?

In a double-slit experiment, if the screen is moved further away from the slits, what happens to the fringe pattern?

Step 1: Understand the double-slit experiment involves light passing through two slits and creating a pattern on a screen.
Step 2: Know that the pattern consists of bright and dark lines called fringes.
Step 3: The distance between the slits and the screen is important for how the fringes appear.
Step 4: When the screen is moved further away from the slits, the distance (D) between the slits and the screen increases.
Step 5: The formula for fringe width (the distance between two bright or two dark fringes) depends on this distance (D).
Step 6: As the distance (D) increases, the fringe width also increases, making the fringes wider apart.
Step 7: Therefore, moving the screen further away causes the fringe pattern to spread out.

Double-slit experiment – A fundamental experiment in quantum mechanics demonstrating the wave-particle duality of light and matter, characterized by the interference pattern created by light passing through two closely spaced slits.
Fringe width – The distance between adjacent bright or dark fringes in an interference pattern, which is influenced by the distance from the slits to the screen.
Geometric optics – The study of light propagation in terms of rays, which helps in understanding how the distance from the slits to the screen affects the fringe pattern.