Q.

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

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a

λ1=12λ2

b

λ1=λ2

c

λ1=2λ2

d

λ1=4λ2

answer is C.

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Detailed Solution

E1E2=λ2λ1⇒2550=λ2λ1 or   λ1=2λ2
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The energies E1 and E2 of two radiations are 25eV, and 50eV, respectively. The relation between their  wavelengths, i.e. λ1 and λ2 will be