Question

What happens to fringe width when the screen distance increases while wavelength and slit separation remain unchanged?

Options

• Fringe width becomes zero

• Fringe width changes randomly

• Fringe width decreases

• Fringe width increases

Answer 1

Screen distance appears in the numerator of \\[\\beta=\\frac{\\lambda D}{d}\\]. Increasing the distance of the screen from the slits increases fringe width.