Physics Chapter 20 Atomic Spectra MCQs with Answers 2nd Year

The second last chapter is about Atomic Spectra and we will study Physics Chapter 20 Atomic Spectra MCQs with Answers 2nd Year. Spectrum is the set of frequencies absorbed or emitted by a substance. The Spectrum of Hydrogen is studied here and it has 5 series. In addition to Rutherford’s atomic model, Bohr proposed an atomic model to remove the objections. His atomic model is a mixture of classical and modern physics. Here we will also study the energies and potentials of these spectra. Then the characteristics of X-rays are very important. There is some uncertainty within the atom-like an electron can’t exist in the nucleus. In the end, there is an important topic of LASER. It has different characteristics and Properties included in this chapter. So, this is a brief intro about the 2nd Year Physics Chapter 20 Atomic Spectra.

Physics Chapter 20 Atomic Spectra MCQs with Answers
2nd Year

Physics Chapter 20 Atomic Spectra MCQs with Answers 2nd Year

Photon of highest frequency will be absorbed when transition takes place from_______.
Reverse process of photoelectric effect is:
The angular momentum of electron in nth orbit is given by:
X rays are similar in nature to:
Radiation with wavelength longer than red lights:
An X-ray tube operating at 30kV, will emit X-ray of minimum wavelength____________.
A laser beam can be sharply focused because it is:
Excited atoms return to their ground state in:
In He-Ne laser, the lasing action is produced by:
In excited state the total energy is E, what is K.E with proper sign?
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