When a diode is foward biased it has a voltage drop of . The safe unit of current through the diodes is
. If a battery of emf is
is used in the circuit, the volume of minimum resistance (in ohms) to be connected in series with the diode so that the current doesn't exceed the safe limit is
Option: 1 100
Option: 2 50
Option: 3 30
Option: 4 200
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5 g of Na2SO4 was dissolved in x g of H2O. The change in freezing point was found to be 3.820C. If Na2SO4 is 81.5% ionised, the value of x (K
A capacitor is made of two square plates each of side 'a' making a very small angle
A solution of m-chloroaniline, m-chlorophenol and m-chlorobenzoic acid in ethyl acetate was extracted initially with a saturated solution of NaHCO3 to give fraction A. The leftover organic phase was extracted with d