(a) condom:
this are rubber or latex sheaths which are put on penis before copulation. It's commonly called as 'nirodh'. It prevents the deposition of sperms in the vagina and also prevent the spread of stds and AIDS.
Female condom is also introduced in India which was used in USA, Brazil, South America, etc. earlier
(B) cervical cap:
this are made by Rubber and are field in vagina to check the entry of sperm of which are reusable.
(C) intrauterine device:
these are copper-t and loops which are filled in the uterus and prevent of fertilization of the egg.
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