Assertion [A]: Myometrium is an important layer of the uterus.
Reason [R]: Myometrium allows the uterus to enlarge in pregnancy and causes strong contractions during parturition.
Match the following:
The mass of particle X is four times the mass of particle Y. The velocity of particle Y is four times the velocity of X. The ratio of de Broglie wavelengths of X and Y is: