In a double$-$slit experiment, it is observed that the distance between adjacent maxima on a remote screen is $1\mathrm{.}0$ cm $.$ What happens to the distance between adjacent maxima when the slit separation is cut in half?

It decreases to $0\mathrm{.}50$ cm

It increases to $2\mathrm{.}0$ cm $.$

It decreases to $0\mathrm{.}25$ cm $.$

It increases to $4\mathrm{.}0$ cm $.$