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Questions  

An electron jumps from the 4th orbit to 2nd orbit of hydrogen atom. Given the Rydberg's constant  R=107m1the frequency in Hz of there emitted radiation will be

a
(3/16)105
b
(16/3)105
c
(9/16)1015
d
(3/4)1015

detailed solution

Correct option is C

1λ=R1n12−1n22 v=cλ=CR1n12−1n22 =3×1081071(2)2−1(4)2 =3×1081071(2)2−1(4)2 =916×1015Hz

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