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The displacement $x$ of a particle varies with time $t$ as $x = ae^{-\alpha t} + be^{\beta t}$, where $a, b, \alpha$ and $\beta$ are positive constants. The velocity of the particle will:
The velocity ($v$)-time ($t$) plot of the motion of a body is shown below: The acceleration ($a$)-time ($t$) graph that best suits this motion is:
Which of the following algae contains mannitol as reserve food material?
MTP is:
Diaphragms, cervical caps and vaults are:
MTPs are considered relatively safe during the _______ trimester; _______ trimester abortions are riskier:
Sterilisation in males is ____________ and in females is ___________:
A cell reaction becomes spontaneous when:
In case of a couple, where the male is having a very low sperm count, which technique will be suitable for fertilisation?
STDs lead to:
Birth control pills contain synthetic estrogen and progesterone. How might these hormones prevent pregnancy?
What is true about "Saheli"? I: Developed at the CDRI, Lucknow II: Contains a steroidal preparation III: "Once-a-week" pill IV: Many side-effects V: High contraceptive value VI: Very few side-effects
Pills, implants and IUDs are very effective if taken within __________ of coitus.
Natural methods for contraception work on the principle of:
A car moving with a velocity of $10 \text{ m/s}$ can be stopped by the application of a constant force $F$ in a distance of $20 \text{ m}$. If the velocity of the car is $30 \text{ m/s}$, it can be stopped by this force in:
Which of the following velocity-time graphs represent uniform motion?
"Test tube" baby refers to:
Emergency contraception involves administering any of the following within 72 hours of unprotected sexual activity except:
IUDs: I. Increase phagocytosis of sperms II. Release Cu ions that suppress sperm motility and fertilising capacity of sperms III. Make the uterus unsuitable for implantation IV. Make the cervix hostile to sperms V. Prevent semen from entering the female reproductive tract. Which of the above statements are true?
The shared terminal duct of the reproductive and urinary system in the human male is: