Question

A fine spectrum is the splitting of a spectrum into closely spaced lines
(A).True
(B).False

Answer 1

Hint: First, we need to know the fine spectrum, then we can easily answer this question. The fine structure or fine spectrum means the splitting of spectral lines of an atom or molecule into two or more components. Each component has different wavelengths. The fine structure is produced, when the making transition from one energy state to another energy state.

Complete answer:
Option (B)
We know a fine spectrum means splitting a spectrum into two or more components. Here splitting means the components separated by some distance or we can say closely spaced lines. If it is false, the definition of the fine spectrum is wrong. So option B is wrong.
Option (A)
It’s true. The fine spectrum means the splitting of spectral lines into multiple components. So it has some closely spaced lines.So option A is correct.

Additional Information:
The fine structure is produced, when the making transition from one energy state to another energy state. The atom is the component of electron, proton, and neutron. Inside the atom, the electron revolves around the nucleus. If any energy incident on an electron means, the electron will make a transition from one energy state to another energy state. While making this transition it releases some energy as radiation. This energy has a fine spectrum. Or we can say simply, the incident energy is split into two or more components of the spectral lines with some closely spaced.

Option (A) is correct.

Note:
We can't see the fine structure spectral lines with a naked eye. So we will use one instrument to see the fine structure spectral lines. That instrument is called a spectrometer.