Question

Radius of large circle is 6 more than radius of the small circle. Find the cost of painting in the area that is not covered by small circle if it is rs. 12/m square

Answer 1

Molar conductivity of a solution at a given concentration is the conductance of volume V of a solution containing 1 mole of the electrolyte kept between two electrodes with the area of cross-sectionAand distance of unit length. If temp. Increases , k of electrolyte Sol. Increases because mobility of ions increases.