Class 11

INTRODUCTION: Estimation is a sort of rounding off. Estimation is employed in daily life as well as in areas such as mathematics and physics. Many physical numbers are estimated by rounding off the actual value to the next whole number, such as the amount of money, the distance travelled, the length measured, and so on. […]

Introduction While making measurements in practical and theory work, we tend to encounter errors. The errors might be due to technical or human errors. No physical quantities have accurate values. To get accurate results, it is important to understand proper measurement. This is likely to differ from the unknown true value of the quantity and

The Wheatstone bridge is a very useful device. It is used to measure resistances that are not known. It uses a principle that lets it measure the unknown resistance with the help of known resistance. Therefore, a Wheatstone bridge can be defined as a device used to calculate medium or minimum resistance by comparing it

Measuring is essential to understanding the world. Measurements are made using tools that allow us to correctly quantify quantities. Although measurements are a good way of giving value to the world, it is important to recognise that the results have uncertainty. This uncertainty is known as error. The error in a measurement is the difference

Measurement is necessary for humans to comprehend the external environment, and we have acquired a sense of measurement over millions of years of living. Measurements need the use of equipment that give scientists a numerical value. The issue here is that the outcome of every measurement made with any measuring device is subject to some

Accuracy and precision are important characteristics of any measurement. To understand the difference between the two and why it is important to know which you’re dealing with, you need to understand each. Accurate measurements are close to the true value, with precision referring to how reproducible the measurements are, even if they are far from

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?