The ratio of the wavelengths of the last lines of the Balmer and Lyman series is-

1. 4:1

2. 27:5

3. 3:1

4. 9:4

The splitting of spectral lines in a magnetic field, arising out of the orbital motion of electrons only and the further splitting due to spin motion are respectively called

1. Zeeman and Stark effects

2. Zeeman and anomalous Zeeman effects

3. Stark and Zeeman effects

4. Zeeman and Kerr effects

There are three energy levels in an atom. How many spectral lines are possible in its emission spectra?

1. One

2. Two

3. Three

4. Four

The spectrum produced from an element is:

1.  atomic spectrum

2.  line spectrum

3.  absorption spectrum

4.  any one of the above

STATEMENT-1: Line emission spectra are useful in the study of electronic structure.

STATEMENT-2: Each element has a unique line emission spectrum.

1. If both the statement are true and statement -2 is the correct explanation of statement 1

2. If both the statements are true but statement-2 is not the correct explanation of statement 1

3. If statement 1 is true and statement 2 is false

4. If statement 1 is false and statement 2 is true