Physical World and Measurement

Accuracy and Precision in Measurements

If you want to do any accurate measurement, you need to know the concept of accuracy and precision measurements. You would have noticed that it is never the same number twice when taking a measurement. When you measure the speed of a car, it comes back as different numbers at different times. Why is this? […]

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Accuracy and precision, significant figures, Class 11, NEET, Physical World and Measurement, Physics

Conversion of one Physical Quantity into other

We work with measurement and analysis on a daily basis. Regardless of whether we are measuring someone’s height or weight, a number and unit will be used to determine the actual measurement. To represent this measurement, we must first associate everything we’re measuring with an amount, and these numbers must be different for various types

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Class 11, NEET, Physical World and Measurement, Physics, Units of measurement: SI units

Young’s modulus

Introduction Young’s modulus One of the most important engineering tests is the bending or fracture of an object or material, and a characteristic showing that it is Young’s modulus. It is the unchanged-able fundamental property of a material.  This is a measure of how easy the material is to stretch or deform. In this article,

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Class 11, NEET, Physical World and Measurement, Physics, Units of measurement: SI units

What is Measuring Mass, Length and Time?

Any mechanical quantity may be stated using the three fundamental mass, length, and time values. Speed, for example, is defined as length divided by time. Force is defined as mass times acceleration. Hence, it is a mass times a distance divided by the square of time. Square brackets denote the dimensions of the quantity within.

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Class 11, NEET, Physical World and Measurement, Physics, Units of measurement: SI units

What are Fundamental and Derived Units

One of the essential principles in scientific philosophy is measurement. Scientists must be able to quantify their findings to conduct experiments and create hypotheses. The term comes from the Greek “The origin of the English word “measuring” is “meton,” which means “restricted ratio.” By comparing an item to a standard, measurement techniques may be used

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Class 11, NEET, Physical World and Measurement, Physics, Units of measurement: SI units

What are CGS, MKS, FPS, SI Systems of Units?

The CGS system, abbreviated for centimetre, gram, and second of units, predates the recent International System, also known as SI units. This is the current iteration of the metric system. The CGS system is a different system based on the important units of centimetres for distance, grams for mass, and second for time. It was

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Class 11, NEET, Physical World and Measurement, Physics, Units of measurement: SI units

Units of Measurement: Detailed Notes

What Is a Measurement? Measurement is a quantifiable amount of a physical magnitude. Measurements are formed by a quantity and a unit. Measurements are a key concept related to defining quantities in a uniformed language. Carl Sagan, the famous astrophysicist, said that human beings are a way that we allow the Cosmos to know itself.

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Class 11, NEET, Physical World and Measurement, Physics, Units of measurement: SI units

Units of Measurement

Introduction The topic ‘units of measurement’ deals with the quantities used as a standard of measurements. It explains the comparison and measurement of certain physical quantities. We need some fixed quantities as standard units for the comparison and measurement. For example, an elephant’s weight is more than a horse’s, but how do we ascertain this?

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Class 11, NEET, Physical World and Measurement, Physics, Units of measurement: SI units

Unit of Velocity

The rate of displacement that a particle or an object endures over a period of time is commonly characterised as the velocity of an object. Velocity is defined as a physical vector quantity, which means that it must be defined in terms of both direction and magnitude. Speed and velocity, on the other hand, should

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Class 11, NEET, Physical World and Measurement, Physics, Units of measurement: SI units

Unit of Sound

Sound Have we ever found ourselves in a noisy setting, grimacing and holding our ears? We can ponder why certain noises appear to be so loud. The duration of a sound, the frequency of its pitches, and the environment in which we hear the sound are all factors that influence how loud it appears. Loudness,

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Class 11, NEET, Physical World and Measurement, Physics, Units of measurement: SI units