The energies E1 and E2 of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e., λ1 and λ2 will be

(a) λ1 = 2λ2

(b) λ1 = 4λ2 

(c) λ112λ2

(d) λ1 =

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EMT Radiation

(a)

 E1 = 25eV, E= 50eV

E1 = hcλ1 and E2 =hcλ2or E1E2=λ2λ1or 2550=λ2λ1or λ1 = 2λ2

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