In a double-slit experiment, what is the effect of increasing the distance betwe

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Question: In a double-slit experiment, what is the effect of increasing the distance between the slits on the fringe width?

Options:

Correct Answer: Fringe width increases

Solution:

Increasing the distance between the slits increases the fringe width because the angle of diffraction increases.

In a double-slit experiment, what is the effect of increasing the distance between the slits on the fringe width?

In a double-slit experiment, what is the effect of increasing the distance between the slits on the fringe width?

Correct Answer: Fringe width increases.

Step 1: Understand what the double-slit experiment is. It involves light passing through two narrow slits and creating a pattern of bright and dark spots on a screen.
Step 2: Know what fringe width is. Fringe width is the distance between two consecutive bright or dark spots in the pattern.
Step 3: Recognize that the distance between the slits affects how the light waves spread out after passing through the slits.
Step 4: Realize that increasing the distance between the slits causes the light waves to spread out more, which leads to a larger angle of diffraction.
Step 5: Understand that a larger angle of diffraction means that the bright and dark spots (fringes) will be further apart from each other.
Step 6: Conclude that increasing the distance between the slits increases the fringe width because the spots become more spaced out.

Double-slit experiment – A fundamental experiment in quantum mechanics demonstrating the wave-particle duality of light and matter, where light passing through two closely spaced slits creates an interference pattern.
Fringe width – The distance between adjacent bright or dark fringes in the interference pattern, which is influenced by the distance between the slits and the wavelength of light used.
Angle of diffraction – The angle at which light waves spread out after passing through the slits, affecting the interference pattern.