Units, Dimension and Measurement Handwritten PDF: Units ka use physical quantities ko quantify karne ke liye kiya jaata hai.

A

Ye quantity ke nature aur magnitude ko represent karta hai. For example, length ki measurement metre (m) ya feet (ft) mein ki jaati hai, time ki measurement second (s) mein ki jaati hai, aur mass ki measurement kilogram (kg) mein ki jaati hai.

## This happens according to me.

Units ka use physical quantities ko quantify karne ke liye kiya jaata hai. Ye quantity ke nature aur magnitude ko represent karta hai. For example, length ki measurement metre (m) ya feet (ft) mein ki jaati hai, time ki measurement second (s) mein ki jaati hai, aur mass ki measurement kilogram (kg) mein ki jaati hai.

Dimensions, ek physical quantity ki inherent property hai. Dimensions ke through hum quantity ko classify karte hai. For example, length ki dimension hai L, mass ki dimension hai M, aur time ki dimension hai T.

Measurement, physical quantities ke numerical values ka determination hai, jiske liye hum units ka use karte hain. Measurement ki accuracy aur precision bahut important hai, kyunki ye scientific research aur practical applications ke liye bahut important hai.

### Here are the notes for 11th class in which all the topics according to syllabus are

• Measurement
• Physical quantity
• Need for measurement
• Fundamental and derived quantity
• Dimensions
• Dimensional analysis
• System of units

## This is the example which is in the notes.

Units, Measurement, and Dimensions are fundamental concepts in Physics. They are essential for quantifying physical quantities and studying the laws of nature. These concepts help us to understand the physical world around us and make accurate predictions about it.

Units: Units are used to measure physical quantities, such as length, mass, time, temperature, and electric current. Units provide a standard for comparison, allowing us to quantify physical quantities and express them in a way that is universally understood. There are two types of units: fundamental and derived units.

## Features

1. Very easy language and eye-catching formatting: Handwritten notes are designed to be visually appealing and less daunting to read, making them more engaging for students. They use simple language, making them easy to understand for students of all levels.
2. Step-by-step explanation of each topic: Our notes come with a detailed explanation of each topic, breaking them down into manageable parts that are easy to comprehend. This makes it easier for students to understand complex concepts and formulas.
3. Saves time and money: Handwritten notes save you time and money because you don’t have to spend hours poring over textbooks or attending extra coaching classes. You can simply download the notes and start studying at your own pace.
4. Focuses on topics that carry more marks in exams: The notes are designed to focus on the topics that carry more marks in exams, giving you a better chance of scoring well in your exams.
5. Revised every year as per the updated syllabus of CBSE: Our handwritten notes are updated every year as per the updated syllabus of CBSE, ensuring that you’re always studying the most relevant material.
6. Topics are as per syllabus: The topics covered in the notes are as per the syllabus, allowing you to revise the subject in minimum time with maximum accuracy.
7. Written in clean, clear and readable handwriting: Our notes are written in beautiful and clear handwriting, so you don’t face any difficulty in reading them.
8. Helps students comprehend complex concepts: After reading these handwritten notes, students will not get panicked by huge books. They can read any other books with better understanding.
9. Based on NCERT guidelines: Our notes are based on NCERT guidelines, making them very helpful for CBSE Board Exam as well as State Board Examination.
10. Covers complete syllabus of CBSE Board Exams: Our notes cover the complete syllabus of CBSE Board Exams, giving you a comprehensive understanding of the subject.
11. Important questions and Numericals are well-explained: Our notes contain important questions and numerals that are explained in detail, ensuring that you have a thorough understanding of the subject.

Fundamental Units: Fundamental units are the basic units of measurement, which cannot be defined in terms of other units. The international system of units (SI) has seven fundamental units, which are:

1. Length (m) – the meter is the distance traveled by light in a vacuum in 1/299,792,458 of a second.
2. Mass (kg) – the kilogram is defined as the mass of the International Prototype of the Kilogram, a platinum-iridium cylinder kept at the International Bureau of Weights and Measures in France.
3. Time (s) – the second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the caesium-133 atom.
4. Electric current (A) – the ampere is defined as the constant current that, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed one meter apart in a vacuum, would produce a force between the conductors of 2 x 10^-7 newtons per meter of length.
5. Thermodynamic temperature (K) – the kelvin is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water.
6. Amount of substance (mol) – the mole is the amount of substance that contains as many elementary entities as there are atoms in 0.012 kilograms of carbon-12.
7. Luminous intensity (cd) – the candela is defined as the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 10^12 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian.

Derived Units: Derived units are the units that are derived from the fundamental units. They are formed by multiplying or dividing the fundamental units. For example, velocity is measured in meters per second (m/s), which is a derived unit. There are many derived units, including:

1. Area (m^2)
2. Volume (m^3)
3. Velocity (m/s)
4. Acceleration (m/s^2)
5. Force (N)
6. Pressure (Pa)
7. Energy (J)
8. Power (W)

Measurement: Measurement is the process of assigning a numerical value to a physical quantity. Measurements are taken using instruments such as rulers, balances, clocks, and thermometers.

The accuracy and precision of measurements depend on the quality of the instrument and the skill of the person making the measurement.

The SI units are used to express the numerical value of physical quantities. For example, the length of a room can be measured in meters, the mass of an object can be measured in kilograms, and the time taken for an event can be measured in seconds.

Dimensions: Dimensions are the physical quantities that cannot be expressed in terms of other quantities. For example, length, mass, and time are dimensions. Each physical quantity has a dimension.

## conclusion

handwritten notes are an excellent resource for students preparing for class 11th physics exams. They are designed to make studying easier, efficient and effective. They are written in simple language, making them easy to understand for students of all levels. They cover the complete syllabus of CBSE Board Exams and are updated every year as per the latest guidelines. So, if you’re struggling to keep up with your studies, give handwritten notes a try and see the difference for yourself!

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###### NirbhaySingh

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