Photonics lecture 1 version 2

Energy states of atoms and molecules are...

• Continuous

• Constant

• Discrete

• Uncertain

What are the electromagnetic waves of the longest wavelength?

• Radio waves

• Microwave

• X-ray

• Gamma

... molecular motion is of the lowest energy.

• Electronic

• Vibrational

• Rotational

The energy of transitions between rotational and vibrational levels of a molecule refers to ...

• UV range

• Visible range

• IR range

What task is not solved using IR spectroscopy?

• Qualitative analysis

• Determination of the position of the energy levels of a substance

• Quantitative analysis of mixtures of substances

• Study of intermolecular interactions

Which electromagnetic waves have the highest frequency?

• Radio waves

• Microwave

• X-ray

• Gamma

Which branch of spectroscopy studies the energy levels of complex systems (crystals, amorphous bodies) and transitions between them?

• Nuclear spectroscopy

• Atomic spectroscopy

• Molecular spectroscopy

• Condensed matter spectroscopy

The process of converting atoms into molecules.

• Association

• Dissociation

• Ionization

• Recombination

Can two different chemical elements have the same absorption spectrum?

• Yes

• No

• Only if they are in the same group in the periodic table

The sensitivity spectrum of the human eye

• 400-750 nm

• 200-750 nm

• 400-1000 nm