When the wavelength of radiation falling on metal is changed from to
the maximum kinetic energy of the photoelectrons becomes there times larger. The wave function (in eV) of the metal is close to
Option: 1 0.61
Option: 2 1.02
Option: 3 0.52
Option: 4 0.81
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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