The wavelength of the radiation emitted, when in hydrogen atom electron falls from infinity to stationary state 1, would be (Rydberg constant )
- (A)91 nm✓ Correct
- (B)
- (C)406 nm
- (D)192 nm
Answer: (A)
Solution
Use the Rydberg relation for an electron falling from to . The second term drops out, leaving . Inverting gives , which on converting to nanometres is .
JEE Main · 2004 · 24 Apr 2004 · Offline · Single correct option