If the distance from the slits to the screen in a double-slit experiment is incr

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Question: If the distance from the slits to the screen in a double-slit experiment is increased, what happens to the fringe pattern? (2023)

Options:

Correct Answer: Fringe width increases

Exam Year: 2023

Solution:

Increasing the distance from the slits to the screen increases the fringe width, as fringe width β is proportional to the distance.

If the distance from the slits to the screen in a double-slit experiment is increased, what happens to the fringe pattern? (2023)

If the distance from the slits to the screen in a double-slit experiment is increased, what happens to the fringe pattern? (2023)

Step 1: Understand what a double-slit experiment is. It involves light passing through two slits and creating a pattern of bright and dark lines (fringes) on a screen.
Step 2: Know that the distance from the slits to the screen is important. This distance affects how the light waves spread out.
Step 3: Realize that increasing the distance from the slits to the screen means the light waves have more space to spread out.
Step 4: Understand that as the light waves spread out more, the distance between the bright and dark lines (fringe width) increases.
Step 5: Conclude that increasing the distance from the slits to the screen results in wider fringes on the screen.

Double-slit experiment – A demonstration of the wave nature of light, showing interference patterns created by the superposition of light waves from two slits.
Fringe width – The distance between adjacent bright or dark fringes in an interference pattern, which is affected by the distance from the slits to the screen.
Proportionality in physics – Understanding how changes in one variable (distance) affect another variable (fringe width) in a predictable manner.