Hormonal Regulation of the Menstrual Cycle

Q.

Which hormone is responsible for oogenesis?

Q.

Two long parallel straight wires, each carrying a current I are separated by a distance r. If the currents are in opposite directions, then the strength of the magnetic field at any point midway between the two wires is

1. $\frac{{\mu }_{0}I}{\pi r}$

2. $\frac{2{\mu }_{0}I}{\pi r}$

3. $\frac{{\mu }_{0}I}{2\pi r}$

4. $Zero$

Q.

Two long parallel straight wires, each carrying a current I are separated by a distance r. If the currents are in opposite directions, then the strength of the magnetic field at any point midway between the two wires is

1. $\frac{{\mu }_{0}I}{\pi r}$

2. $\frac{2{\mu }_{0}I}{\pi r}$

3. $\frac{{\mu }_{0}I}{2\pi r}$

4. $Zero$

Q. During bleeding phase of menstrual cycle, unfertilized secondary oocyte undergoes autolysis. The interplay of hormone then is:

1. Progesterone and estrogen continue the hypertropy of endometrial lining
2. Prolactin and progesterone reduces LH level causing regression of corpus luteum
3. Progesterone inhibits the release of LH from causing regression of corpus luteum
4. Prolactin and estrogen inhibits progesterone secretion leading to sloughing off of uterine lining

Q. Two thin, long, parallel wires, separated by a distance 'd' carry a current of 'i' A in the same direction. They will

1. Attract each other with a force of $\frac{{\mu }_0{i}^2}{2\pi d^2}$
2. Repel each other with a force of $\frac{{\mu }_0{i}^2}{2\pi d^2}$
3. Attract each other with a force of $\frac{{\mu }_0{i}^2}{2\pi d}$
4. Repel each other with a force of $\frac{{\mu }_0{i}^2}{2\pi d}$

Q. An ampere is that current which when flowing in two infinite parallel wires, one metre apart, produces a force of 2 x 10^-7 N/m between them.

1. False
2. True

Q. Two thin, long, parallel wires, separated by a distance 'd' carry a current of 'i' A in the same direction. They will

1. Attract each other with a force of $\frac{{\mu }_0{i}^2}{2\pi d^2}$
2. Repel each other with a force of $\frac{{\mu }_0{i}^2}{2\pi d^2}$
3. Attract each other with a force of $\frac{{\mu }_0{i}^2}{2\pi d}$
4. Repel each other with a force of $\frac{{\mu }_0{i}^2}{2\pi d}$