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1. Introduction to Geometrical Optics (in Hindi)
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General Introduction, Least time considerations some problems on general light

Deependra Singh Naruka
#BTech (Mechanical) # Senior Faculty of Physics #Kota (Rajasthan) #Ex Bansal classes faculty #Ex Narayana IIT academy Faculty # I am teachin

U
Rahul Kumar
2 years ago
told used whenever an object is given
sir iske baad Modern physics Kara Dena phir electro and sir aise karvana ki syllabus poora ho Jaye
I will modern after it
thank you so much for the video
Easiest way to understand concepts
explanation is very good
thanks dear
great sir๐๐๐๐๐๐๐๐๐
1. OPTICS CS rLO naanu edtsic Field

2. FERMAT'S PRINCIPLE OF LEAST TIME "From all the possible paths to go from one point to another, light takes the path which requires least time." 5 rath-2 Light will choose to go through path 2

3. Using this concept we can have an idea about reflection and refraction. 2 7-1 P-2 (Path-2) Most appropriate path for least time considerations

4. General Optics Questions Q. What will be the colour of bulb with respect to observer's eye? wati gen Ans. It seems Green. Colour is the property of Frequency and frequency depends on source. It will not change with changing medium

5. Frequency remains same on changing medium. Wavelength will change on changing medium Speed of light will change with changing medium

6. * We can see things around us due to Two major reason :- 1-> One is due to Emission (or Radiation) of light. 2Due to reflection of light.

7. Q. Which ballon will burst first? Blue Red Red LASER. Red SER * Blue colour reflects blue light and absorbs rest of the colours. Similarly Red reflects red and absorbs rest.