A frame of reference is made up of an abstract coordinate system and a set of physical reference points that are used to fix the coordinate system and standardise measurements within the frame of reference. It is necessary to have a reference point in order to determine the change in position of an object. A […]
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Class 11, Dimensions of physical quantities, dimensional analysis, NEET, Physical World and Measurement, PhysicsThe method of determining the dimensions and units of measurement of physical quantities is known as dimensional analysis. Dimensional analysis is an excellent method for ensuring that equations are dimensionally correct. We can also utilise dimensional analysis to build credible equations if the quantities are known. It can be used to quantify the size and
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Class 11, Dimensions of physical quantities, dimensional analysis, NEET, Physical World and Measurement, PhysicsDimensional analysis is the relationship between physical quantities using dimensions and measuring units. Dimensional analysis and its application are crucial because they make no changes in the units, which allows us to do mathematical operations more smoothly. It considers lengths, angles and geometrical qualities, such as flat and straight. The fundamental and derived quantities principle
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Class 11, Dimensions of physical quantities, dimensional analysis, NEET, Physical World and Measurement, PhysicsMotion in a Plane is the Motion in two dimensions that requires a two-coordinate system, such as an X-Y coordinate system. An instance of such movement is in the path of a projectile or circular motion. A common example of motion in a plane is that of projectile motion. In terms of physics, an object
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Class 11, Dimensions of physical quantities, dimensional analysis, NEET, Physical World and Measurement, PhysicsError analysis is a method of discussing the possible errors that have been encountered in physical measurements. It consists of tabulating the source of error to the observed magnitude. It allows us to determine whether our analysis is valid. An estimated error, in mathematics, has precision attached to it since a measurement unit used helps
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Accuracy and precision, significant figures, Class 11, NEET, Physical World and Measurement, PhysicsPrecision and accuracy are indicators of the error of observation alongside uncertainties. Accuracy refers to how close or distant the measurements are from their actual value, and precision measures how close or dispersed measurements are or define the closeness of the measured value. In science, the precision of measuring systems is defined as the degree
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Accuracy and precision, significant figures, Class 11, NEET, Physical World and Measurement, PhysicsPhysics is a quantitative science about measurements and calculations. These estimations include measurements with uncertainties or errors in analysis. In physics, uncertainty of measured value is an interval around that value in a manner that the repetition of the measurement will generate a new result which lies within that particular interval. Uncertainty is mainly related
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Accuracy and precision, significant figures, Class 11, NEET, Physical World and Measurement, PhysicsPrecision and accuracy are two important metrics to take into consideration when taking measurements. Accuracy is how close a measurement is to the correct value for that measurement. The precision of a measurement system refers to how close the agreement is between repeated measurements. What Is Accuracy? Accuracy is how close or far a given
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Accuracy and precision, significant figures, Class 11, NEET, Physical World and Measurement, PhysicsEvery one of the experimental measurements has some type of uncertainty. To guarantee accuracy and precision in estimations and get genuine information, a proper technique to make up for these uncertainties was required, resulting in significant figures. Here, we will discuss the rules of significant figures and their real-life application. In the later section, we
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Accuracy and precision, significant figures, Class 11, NEET, Physical World and Measurement, PhysicsExact Numbers Exact numbers are numbers that result from counting. For example, a ten is defined as 10 objects, and a kilogram is defined as 1000 grams. An exact number cannot be further simplified. Because they are not measured, these numbers have a certainty. This means that exact numbers have infinite significant figures. Some examples
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Accuracy and precision, significant figures, Class 11, NEET, Physical World and Measurement, Physics