Question

why do doctor's injection needle has a sharp edge?​

Answer 1

Answer:

Hypodermic needles are normally made from a stainless-steel tube through a process known as tube drawing where the tube is drawn through progressively smaller dies to make the needle. The end of the needle is bevelled to create a sharp pointed tip, letting the needle easily penetrate the skin.

hope it helps you dear

Answer 2

Answer:

because sharp edge is not damage your body and and go inside smooth