Combined Pills and Progesterone Pills

Q.

“Combined” contraceptive pill contains

1. Oestrogen and spermicide

2. Progesterone and spermicide

3. Oestrogen and progesterone

4. Progesterone and FSH

Q. Birth control pills contain small amounts of and large amounts of .

1. LH
2. FSH
3. progesterone
4. oestrogen

Q. A transverse sinusoidal wave moves along a string in the positive $x-$direction at a speed of $10\text{cm/s}$. The wavelength of the wave is $0.5m$ and its amplitude is $10cm$. At a particular time $t$, the snap-shot of the wave is shown in figure. The velocity of point $P$ when its displacement is $0.05m$ is

1. $\frac{\sqrt{3}\pi }{50}\hat{j}\text{m/s}$
2. $-\frac{\sqrt{3}\pi }{50}\hat{j}\text{m/s}$
3. $\frac{\sqrt{3}\pi }{50}\hat{i}\text{m/s}$
4. $-\frac{\sqrt{3}\pi }{50}\hat{i}\text{m/s}$

Q. The amplitude, speed and frequency of a plane progressive wave are respectively 0.05 m, 333 m/s, and 110 Hz. Write the equation of the wave.

1. $y=0.05sin110(t-\frac{x}{333})$
2. $y=0.05sin110\pi (t-\frac{x}{333})$
3. $y=0.05sin220(t-\frac{x}{333})$
4. $y=0.05sin220\pi (t-\frac{x}{333})$

Q. A point mass oscillates along the $x-$axis according to the law $x=x_0\cos (\omega t-\pi /4)$. If the acceleration of the particle is written as $a=A\cos (\omega t+\delta )$, then

1. $A=x_0,\delta =-\pi /4$
2. $A=x_0{\omega }^2,\delta =\pi /4$
3. $A=x_0{\omega }^2,\delta =-\pi /4$
4. $A=x_0{\omega }^2,\delta =3\pi /4$

Q. The equation of progressive wave in a wire is given by $y=0.15sin\left[2\pi (15t-\frac{x}{10})\right]$
Where the distance is in meters and time in seconds.
Determine i) amplitude, ii) frequency, iii) wavelength and iv) velocity of the wave

1. $A=0.15m,f=150Hz,v=150m/s,\lambda =1m$
2. $A=0.1m,f=15Hz,v=15m/s,\lambda =1m$
3. $A=0.15m,f=15Hz,v=150m/s,\lambda =10m$
4. $A=0.15m,f=30Hz,v=15m/s,\lambda =10m$