LAWS OF REFLECTION

 Light is known to behave in a very predictable manner. If a ray of light could be approaching and reflecting off of a mirror, then the behavior of the light as it reflects would follow a predictable law known as the law of reflection. The diagram below illustrates the law of reflection.

In the illustration, the shaft of light approaching the glass is known as the incident shaft ( labeled I in the illustration). The shaft of light that leaves the glass is known as the reflected shaft ( labeled R in the illustration). At the point of prevalence where the shaft strikes the glass, a line can be drawn vertical to the face of the glass. This line is known as a normal line ( labeled N in the illustration). The normal line divides the angle between the incident shaft and the reflected shaft into two equal angles. The angle between the incident shaft and the normal is known as the angle of prevalence. The angle between the reflected shaft and the normal is known as the angle of reflection. (These two angles are labeled with the Greek letter"theta" accompanied by a subscript; read as"theta-i"for angle of prevalence and"theta-r"for angle of reflection.) The law of reflection countries that when a shaft of light reflects off a face, the angle of prevalence is equal to the angle of reflection.

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PHOTOSYNTHESIS

 Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar and carbohydrates

HOW TO GET GOOD MARKS IN MATHS

 Many of us believe that to score high in Mathematics one should have an extraordinary brain. But this is not true. Maths is a subject which develops a rational thinking and a logical approach in a student. It is quite difficult for a student to fall in love with Mathematics overnight but here are a few tips to enhance your Mathematics score.

FOLLOW THESE STEPS

 

1. Maintain a separate register for formulae, theories, and methods

This subject is all about formulae, theories, concepts and you are always suggested to keep them handy. You can read them even when you are on the go. This practice is really useful when you are doing your last minute revision.

2. Find solutions yourself

It is good to go through various types of problems, but at the same time, you should also make sure that you solve them for yourself. It is easy to learn the theories and concepts but to learn their application is not that simple. So, if you want to score full marks in Mathematics, you need to solve each question by yourself, at least 3 to 4 times.

3. Understand the Syllabus

Having a clear understanding of your syllabus and weight to various sections will definitely help you to decide how much time you should dedicate to each section. For example, if you are aware that there will be a 5 mark question from a specific section, then you don’t have to spend too much time on such questions.

4. Determine the areas of Improvement

Realizing the areas where you need to focus more will definitely help you to score better. Solving sample papers, writing tests can help you to find those sections in which you need more practice so that you can improve the scores.

Things to consider during Examination

5. Keep the exam paper clean

You should keep in mind that the examiner has to understand every step of your answer and in most of the cases he would not be having much time to spend on a single answer. Avoid overwriting and cutting clean margins for rough work.

6. Answer in steps

Whenever you go through an answer, ensure to pay special attention to the steps that helped you to reach out to get the answer. You cannot simply write the answer and get full marks in Maths, so simply paying attention to the figures is wastage of time. Instead of all this, learn to keep the steps involved. You will definitely secure some marks for each step.

7. Attempt the Familiar questions

Read the question paper thoroughly before you begin to solve the questions. It is very normal to get stuck on the questions which you are not aware of but simply remember that you have a stipulated time to attend the paper. In order to score high in Maths, you must attend the questions you know and then move on to the unfamiliar ones.

CBSE TEACHER