An absorption line of the lowest frequency in the transition of hydrogen spectra is:

1. n=1 to n=2

2. n=3 to n=8

3. n=2 to n=1

4. n=8 to n=3

In which of the following transitions of hydrogen atom, radiation of minimum frequency is emitted ?

1. n₂ = \(\infty\) to  n₁ = 1

2. n₂ = 2  to n₁ = 1

3. n₂ = 3  to n₁ = 2

4. n₂ = \(\infty\) to  n₁ = 3

Calculate the spectral lines that are obtained in the visible region when an electron jumps from n=5 to n=1 in a hydrogen atom:

1. Three (3)
2. Four (4)
3. Six (6)
4. Ten (10)