In a double-slit experiment, if the distance between the slits is increased, what happens to the distance between the interference fringes? (2021)
Practice Questions
1 question
Q1
In a double-slit experiment, if the distance between the slits is increased, what happens to the distance between the interference fringes? (2021)
Increases
Decreases
Remains the same
Becomes zero
The distance between the fringes decreases as fringe width β = λD/d; increasing d reduces β.
Questions & Step-by-step Solutions
1 item
Q
Q: In a double-slit experiment, if the distance between the slits is increased, what happens to the distance between the interference fringes? (2021)
Solution: The distance between the fringes decreases as fringe width β = λD/d; increasing d reduces β.
Steps: 4
Step 1: Understand the double-slit experiment. It involves light passing through two slits and creating a pattern of bright and dark lines called interference fringes.
Step 2: Know the formula for fringe width (distance between fringes), which is β = λD/d, where λ is the wavelength of light, D is the distance from the slits to the screen, and d is the distance between the slits.
Step 3: Identify what happens when the distance between the slits (d) is increased. According to the formula, if d increases, the value of β (fringe width) decreases.
Step 4: Conclude that as the distance between the slits increases, the distance between the interference fringes decreases.
