Ans: Given refractive index of glass, $\mu=1.5$ Speed of light, $\mathrm{c}=3 \times 10^{8} \mathrm{~m} / \mathrm{s}$ Now, we have the speed of light in glass given by the relation, $$...

Previous year Chemistry Question Paper

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### Consider interference between two sources of intensities I and 4I. What will be the intensity at points where phase differences are:

Ans: We know that, $I=a^{2}+b^{2}+2 a b \cos \phi$ Where, $a$ and $b$ are amplitudes of two coherent waves that are having phase difference of $\phi$. Here $a^{2}=I, b^{2}=41$ $$ \begin{array}{l}...

### Write two points of difference between interference and diffraction.

Ans: Some differences between interference and diffraction are the following: \begin{tabular}{|l|l|} \hline \multicolumn{1}{|c|}{ Interference } & \multicolumn{1}{c|}{ Diffraction } \\ \hline...

### From the rate expression for the following reactions, determine their order of reaction and the dimensions of the rate constants.

(a) Rate

(b) Rate

(c) Rate (d) Rate

Solution: (a) Given rate $=k[N O]^{2}$ Therefore, order of the reaction $=2$ Dimensions of $k=\frac{\text { Rete }}{[N O]^{\sharp}}$ $$ \begin{array}{l} =\frac{\operatorname{mal} L^{-1}...