The wavelengths of two radiations are 200 & 300nm respectively. Then identify the correct statement of ratios in List-A
LIST - A LIST - B
I) Energies a) 1 : 1
II) Frequency b) 2 : 3
III) Velocity c) 3 : 2
IV) Wave number d) 2 : 9

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I – b, II – b, III – b, IV – b

I – b, II – c, III – a, IV – a

I – b, II – b, III – a, IV – c

I – c, II – c, III – a, IV – c

answer is B.

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Detailed Solution

$(i) E = \frac{h c}{λ} E α \frac{1}{λ} \frac{E_{1}}{E_{2}} = \frac{λ_{2}}{λ_{1}} = \frac{300}{200} = \frac{3}{2}$

(ii) $E α v (frequency)$

(iii) All types of electromagnetic radiations can move with same velocity.

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