Consider a fixed uniformly charged insulating sphere with radius R and total charge +Q. A point charge -q $(q

A frictionless circular wire of unit radius is fixed on the horizontal plane. Two-point particles of unit mass start moving simultaneously from point $A(\theta=\frac{\pi}{2})$ with identical uniform angular speeds in opposite directions, and meet again at point $B(\theta=-\frac{\pi}{2})$. During this time, which of the following figures schematically represent the magnitude of the total linear momentum P of the system, as a function of $\theta$? [Image Placeholder]

Which of the following statements about the reabsorption process in Henle's loop are correct? (a) The descending limb of Henle's loop is permeable to water but almost impermeable to electrolytes. (b) Urine gets concentrated in Henle's loop. (c) Reabsorption of $Na^{+}$ and water takes place in Henle's loop. (d) Active or passive transport of electrolytes occurs in the ascending limb of Henle's loop. Choose the correct answer from the options given below:

The following table presents the part of the electromagnetic spectrum and their corresponding major applications. P. Microwave - I. For purifying the water Q. UV rays - II. For warming the food R. Gamma rays - III. For AM and FM communication systems S. Radio wave - IV. For treating the Cancer cells The correct option is:

The amino acid that gives a red-blood colour on treating its sodium fusion extract with sodium nitroprusside is