What will be the difference between electromagnetic radiation shown in $\mathrm{A}$ and $\mathrm{B}$…

What will be the difference between electromagnetic radiation shown in $\mathrm{A}$ and $\mathrm{B}$ respectively ?


(i) Velocity
(ii) Wavelength
(iii) Frequency
(iv) Energy

1. (ii) only
2. (ii) and (iv)
3. (ii), (iii) and (iv)
4. (iv) only

Solution

$\mathrm{e} / \mathrm{m}$ waves shown in figure $\mathrm{A}$ has higher wavelength in comparison to $\mathrm{e} / \mathrm{m}$ waves shown in figure $\mathrm{B}$.
Thus these waves also differ in frequency and energy. $\quad v=\frac{c}{\lambda}$


$\Rightarrow E_{1}=\frac{h c}{\lambda_{1}}$

$\Rightarrow E_{2}=\frac{h c}{\lambda_{2}} \quad \lambda_{1}>\lambda_{2} \Rightarrow E_{1} < E_{2}$

Asked in: JEE-TOPICTESTS-CHEMISTRY

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