Q.

The Frequencies  of two electromagnetic radiations are 25 eV and 50 eV respectively. The relation between their wavelengthsλ1 and λ2 will be

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a

λ1 = λ2

b

λ1 = 2 λ2

c

λ1 =4 λ2

d

λ1 =12 λ2

answer is B.

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Detailed Solution

ν1=cλ1and ν2=cλ2 ; ν1 ν2=λ2λ1 λ2λ1 =2550=12 λ1=2λ2
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The Frequencies  of two electromagnetic radiations are 25 eV and 50 eV respectively. The relation between their wavelengthsλ1 and λ2 will be