Question

What happens when the slit is not parallel to the filament?

Options

• Coloured fringes become wider

• The bands become wider and more visible

• Clear, bright, and dark bands appear

• The pattern is indistinct or disappears

Answer 1

When the slit is not parallel to the filament, the pattern is indistinct or disappears. The slit should be aligned parallel to the filament for clear fringes.