Wave theory

 Lesson No 07. Waves Optics

Introduction




We have studied in class XI that light travels in a straight line which was considered to be in the form of ray.In the form of ray light shows various phenomenon like Reflection,Refraction,Dispersion. In previous class we have studied about reflection of light  through spherical mirrors and refraction through lens and many more thing about optical instruments. In this chapter we are going to discuss about Propagation of light in surrounding ,its various properties in the form of a waves.

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Examples for Practice

Topic : Scalar and Vector

Example for practice

  1. Two vectors P and Q have magnitudes 3 units and 4 units respectively. R is the resultant of P and Q. Find the magnitude and direction of R when the angle ɵ  between P and Q  is 30°.
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Units and Measurements

 Lesson No 01. Units and Measurements

Introduction

Experiments and measurement forms the basic of the Physics.We can get knowledge of the surrounding by sense of vision, hearing, Touching,etc.To study and measure phenomenon in physics we have to perform experiments.In physics we come across Various experiments that needs to be measured for further analysis.For measurements of same ,we need to have good knowledge on units and measurements.

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Unit

  • Any  physical Quantity can be measured and expressed in term of number and units.
  • Hence for the measurement of a physical quantity, we need a certain reference standard.
  • The reference standard used for the measurement of  a physical Quantity is called a unit.
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Ankit Yadav
B.E Electrical 
University of Mumbai
 

Being an Engineer, my aim is to focus on imparting basic Knowledge of physics Using all the possible modern technology available in the era. Visualization is the best way of understanding the concept in very extraordinary and interesting way. Im working hard on imparting such knowledge among the students to level up their basic concept of theory in them and  develop a Practical approach in themselves.




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