#### Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for NEET preparation.

#### Online Support

Practice over 30000+ questions starting from basic level to NEET.

#### National Mock Tests

Get familiar with the question pattern for NEET Exam by attempting our National mock tests.

#### Organized Learning

Using our study planner and proper planning out complete syllabus is the key to get a decent rank in NEET. So, we help you prioritize all subjects equally and prepare effectively.

#### Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your NEET preparation.

## Chapter-1:Atmoic Physics and Spectrum

### Introduction:

When atoms are excited, they emit light of certain wavelengths which correspond to different colors. The emitted light can be observed as a series of colored lines with dark spaces in between, this series of colored lines is called a line or atomic spectra. Each element produces a unique set of spectral lines. Since, no two elements emit the same spectral lines, elements can be identified by their line spectrum.

### Chapter Analysis:

This chapter has accounted for a total of 17 questions in the past 11 years. The last four years have seen 1 question being asked from the chapter every year. However, in the year of 2012, a total of 3 questions were asked which was its peak. This makes it a low medium weighted chapter. So, we can expect 1 question from this chapter in the upcoming exams.
The below given graph will illustrate the above-mentioned analysis:

Year 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009
Questions 1 1 1 1 2 2 1 3 1 2 2

The important topics to be covered from this chapter are:
• Alpha Particle Scattering Experiment
• Rutherford’s Model of Atom
• Bohr Model
• Energy Levels
• Hydrogen Spectrum
• Composition and Size of Nucleus
• Atomic Masses, Isotops, Isobars, Isotones
• Radioactivity – Alpha, beta and Gamma Particles/Rays and their Properties
• Mass-Energy relation
• Mass Defect

### Tips and Tricks:

1. Reading the NCERT shall be the first step towards understanding this chapter. Here is the link to the NCERT PDF version of this chapter:
2. Making Mind Maps is a must for this chapter as the topic is easily forgotten by many students.
3. Proper revision is also compulsory. Revision every fortnight will be good as the bulk chapters will make this chapter be easily forgotten is not revised.
4. One must refer to online videos for clearer understanding of the topic.

## Chapter-2:Photoelectric Effect

### Introduction:

The photoelectric effect is the emission of electrons or other free carriers when light hits a material. Electrons emitted in this manner can be called photoelectrons. This phenomenon is commonly studied in electronic physics, as well as in fields of chemistry, such as quantum chemistry and electrochemistry. The very famous scientist, Albert Einstein got Nobel Prize in Physics for the discovery of Photoelectric Effect, and not his very famous Theory of Relativity.

### Chapter Analysis:

A total of 15 questions have been asked from this chapter in the past 11 years making it a low weighted chapter. The last 4 years have seen 1 question being asked every year. This chapter happened to be the king-maker in the year 2011 where a total of 5 questions were asked. However, in 2014, no questions were asked. So, we can expect atleast 1 question from this chapter in the upcoming paper.
The below given graph will illustrate the above-mentioned analysis:

Year 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009
Questions 1 1 1 1 2 0 1 1 5 1 2

The important topics to be covered from this chapter are:
• Photoelectric Effect
• Hertz and Lenard’s Observation
• Einstein’s Photoelectric Equation – Particle Nature of Light
• Matter Waves – Wave nature of Particles
• De Broglie Relation
• Davisson – Germer Experiment

### Tips and Tricks:

2. Making Flash Cards and Flow Charts will help in quick revision
3. A List of important keywords with their meaning must be maintained
4. All the past year questions must be solved thoroughly

## Chapter -3: X-Rays

### Introduction:

X-Rays are a form of electromagnetic radiation, similar to visible light. Unlike light, however, X-Rays have higher energy and can pass through most objects including the body. Medical X-Rays are used to generate images of tissues and structures inside the body.

### Chapter Analysis:

With 3 questions being asked in the past 5 years from this chapter we can observe that this chapter has fallen from the good books of the paper setters in the yesteryears. However, it happened to be a frequented chapter with 11 questions asked between 2009-14. With a total of 14 questions being asked in the past 11 years, this chapter falls in the low weighted category and we should not be expecting more than 1 question from this chapter in the coming years.
The below given graph will illustrate the above-mentioned analysis:

Year 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009
Questions 0 1 1 1 0 2 1 2 3 2 1

### Tips and Tricks:

1. Reading the NCERT shall be the first step towards understanding this chapter. Here is the link to the NCERT PDF version of this chapter:
2. Making Mind Maps is a must for this chapter as the topic is easily forgotten by many students.
3. Proper revision is also compulsory. Revision every fortnight will be good as the bulk chapters will make this chapter be easily forgotten is not revised.
4. One must refer to online videos for clearer understanding of the topic.