A beam of electrons of energy scatters from a target having atomic spacing of
. The first maximum intensity occurs at
. Then
(in eV) is _______. (Plank constant
electron mass
)
Option: 1 50.47
Option: 2 100.94
Option: 3 40.47
Option: 4 80
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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