A convex lens has power . It is cut into two halves along its principal axis. Further, one piece (out of two halves) is cut into two halves perpendicular to the principal axis as shown in the figure. Choose the incorrect option for the reported lens pieces.
The equation is valid for all values of satisfying:
A metallic sphere of radius carrying a charge is kept at a certain distance from another metallic sphere of radius carrying a charge . What is the electric flux at any point inside the metallic sphere of radius due to the sphere of radius ?
The circuit shown in the figure contains two ideal diodes and . If a cell of emf 3V and negligible internal resistance is connected as shown, then the current through resistance (in amperes) is:
The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows: