In a double-slit experiment, if the distance between the slits is increased, wha

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Question: In a double-slit experiment, if the distance between the slits is increased, what happens to the interference pattern?

Options:

Correct Answer: Fringes become narrower

Solution:

Increasing the distance between the slits (d) causes the fringe width (β) to decrease, making the fringes narrower.

In a double-slit experiment, if the distance between the slits is increased, what happens to the interference pattern?

In a double-slit experiment, if the distance between the slits is increased, what happens to the interference pattern?

Step 1: Understand that a double-slit experiment involves light passing through two slits and creating an interference pattern on a screen.
Step 2: Know that the distance between the slits is called 'd'.
Step 3: Recognize that the interference pattern consists of bright and dark fringes (lines) on the screen.
Step 4: Learn that the width of these fringes is called 'fringe width' (β).
Step 5: When the distance 'd' between the slits is increased, the fringe width (β) becomes smaller.
Step 6: This means that the bright and dark fringes become narrower and closer together.

Interference Pattern – The pattern of light and dark fringes created by the constructive and destructive interference of waves passing through two slits.
Fringe Width – The distance between adjacent bright or dark fringes in an interference pattern, which is affected by the distance between the slits and the wavelength of light used.