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12th Class Physics
Short Questions Preparation
Start Chapter 20 Preparation
12th Class Physics Chapter Wise Preparation
Online Short Questions For Chapter 9 "ICS Part 2 Physics Chapter 20 Short Questions Preparation "
Try The Short Questions For ICS Part 2 Physics Chapter 20 Short Questions Preparation
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Total Questions10
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Available Sets3
Physics - ICS Part 2 Physics Chapter 20 Short Questions Preparation
Question # 1
How can spectrum of hydrogen contain so many lines,whereas hydrogen atom contain one electron?
- Ans 1: The single electron in hydrogen atom occupies ground state but it can be excited to several states by absorbing energy.During de-excitation ,it can emit several lines of different wavelength.
ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 1
Question # 1
How can spectrum of hydrogen contain so many lines,whereas hydrogen atom contain one electron?
- Ans 1: The single electron in hydrogen atom occupies ground state but it can be excited to several states by absorbing energy.During de-excitation ,it can emit several lines of different wavelength.
ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 2
Question # 1
Define characteristics of X-rays and continuous x-rays.
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Ans 1: Chararcterstics X-rays: The x-rays emitted from inner shell transitions are called characteristics x-rays and their energy depends on the type of target material.Continuous X-rays:The x-rays emitted having continuous range of frequencies due to bremsstrahlung effect are called continuous x rays.
ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 3
Question # 1
What is fluorescence?
- Ans 1: Fluorescence is a property of absorbing radiant energy of high frequency and re emitting energy of low frequency in the visible region of electromagnetic spectrum.
