Question

why do we need to give the same name to the group of radio buttons?​

Answer 1

Answer:

All radio buttons that share the same name and are controls in the same form are part of a group. ... This means that you have two radio groups, each containing one radio button. You need to put them in the same group (by making them share a name) if you only want one of them to be selected

Answer 2

All radio buttons that share the same name and are controls in the same form are part of a group. ... This means that you have two radio groups, each containing one radio button. You need to put them in the same group (by making them share a name) if you only want one of them to be selected.