A single slit forms a diffraction pattern, with the first minimum at an angle of $40\mathrm{.}0$ from central maximum, using monochromatic light of $480-$nm wavelength. What is the width of the slit?

$624$ nm

$747$ nm

$716$ nm

$685$ nm

$655$ nmA single slit forms a diffraction pattern, with the first minimum at an angle of $40\mathrm{.}0$ from central maximum, using monochromatic light of $480-$nm wavelength. What is the width of the slit?

$624$ nm

$747$ nm

$716$ nm

$685$ nm

$655$ nm