what is empty tag

Question

<p>

Answer 1

Empty tags are self-closing tags, they do not require to have a closing tag.
Example:-<img>, <br>, <hr>

Answer 2

https://www.sololearn.com/discuss/3094265/?ref=app

Answer 3

Empty tag did not need to be closed like <img> and <br> or </br> (both are right but it’s better to use the second one)

Answer 4

Empty tag only needs opening tag and it doesn't need to close for example <img> , <br> and...