In a double-slit experiment, if the distance between the slits is doubled, how d
Practice Questions
Q1
In a double-slit experiment, if the distance between the slits is doubled, how does the fringe width change?
Doubles
Halves
Remains the same
Quadruples
Questions & Step-by-Step Solutions
In a double-slit experiment, if the distance between the slits is doubled, how does the fringe width change?
Step 1: Understand what fringe width (β) means. It is the distance between bright or dark spots on a screen in a double-slit experiment.
Step 2: Know that the distance between the slits is represented by 'd'.
Step 3: Remember the relationship: Fringe width (β) is inversely proportional to the distance between the slits (d). This means if 'd' increases, 'β' decreases.
Step 4: If the distance between the slits (d) is doubled, it means d becomes 2d.
Step 5: Since β is inversely proportional to d, if d is doubled (2d), then β becomes β/2.
Step 6: Conclude that if the distance between the slits is doubled, the fringe width (β) is halved.
