Which of the following statement is not correct about oral contraceptive pills?
They have to be taken daily for a period of $21$ days, starting preferably within the first five days of menstrual cycle
They contain small doses of progestogen-estrogen combination
They inhibit ovulation and implantation
Ovum and sperms are prevented from physically meeting with the help of barriers
Ideal contraceptive should be
$I$. User-friendly
$II$. Easily available
$III$. Effective
$IV$. Interferring coitus
$V$. Expensive and effective
What are $\rm {IUDs}$ ? Give its types and effects
Surgical removal or cutting and ligation of the ends of oviduct is known as
Natural methods of contraception
Withdrawal method of natural contraception