Q136 / 150 · MHT CET 2016 · Physics

In Bohr's theory of Hydrogen atom, the electron jumps from higher orbit n to lower orbit p. The wavelength will be maximum for the transition

  • Correct answer
    A
    n=5 to p=4
  • B
    n=4 to p=3
  • C
    n=3 to p=2 
  • D
    n=2 to p=1

Solution

According to Bohr's theory the wavelength of radiation emitted is given by 1λ=R1ni2-1nf2
For ni=5 and nf=4 , the wavelength emitted will be longest as energy difference ∆E=E5-E4 is very small.

Hence, the correct answer is option: 'A'.

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