Measurement in physics pdf

The chapter on Dimensions and Measurement accounts for one of the most important chapters in the syllabus of JEE Mains. Students can expect to get 2-3 questions from this chapter in the exam. By referring to the notes, JEE Mains aspirants will get access to important concepts, formulae, and questions that they need to prepare for the upcoming The following experiments will attempt to measure using several different methods. Each method will involve several measurements of diameters and circumferences. Exercise Measurement 2 Use the tape measure to measure the circumference and the diameter of the circular objects on the table. Record your data in a table like the following. 1.1.2 Measurement One of the fundamental building blocks of physics is measurement. Essentially, measurement assigns a numerical value to some aspect of an object. For example, if we want to compare the height of two people, we can have them stand side by side and we can easily see who is taller. What if those two people don't When possible, repeating the measurement will help you to decide the range and the uncertainty. With repeated measurements, you can also consider the observed range of your measurements (scatter): scatter = (largest measurement - smallest measurement)/2. Of the above, you should pick the biggest. In your report, all raw data must have Books for Physics and Measurement. For Physics and Measurements, you will find easy to moderate level questions in NCERT books, please solve them first. Then you can do questions from Understanding Physics by D.C. Pandey or H.C. Verma. Both of these books have good quality questions. But apart from these books, you should also give topic-wise MODULE 11.1 MEASUREMENT Introduction Measurements play a very important role in the investigation of physics. It is defined as the act of finding the size of physical quantity such as height, length, width, time, mass, volume, density, force, speed and acceleration and so on. We use measurement daily such as the the accurate measurement may lead to improved complex systems e.g., space shuttles, while in medical metrology accurate measurement of blood pressure lessens the risk of misdiagnosis and disease. The world of physics revolves around fundamental constants such as the speed of light c , Planck's constant h , the ne-structure constant and the gravita- Measurement of area (Accurate Measurement) Area of a regularly shaped object can be found by applying an appropriate formula e.g. Approximation of area of irregular bodies We trace their outline on the square paper of 1cm 2 e.g. Full squares=cm 2 1 / 2 full squares=..cm 2 AREA=full square+ 1 / 2 full squares Volume Physics is a way of observation of the world around us. Through observation we understand world and how objectsour in the world behave (laws of nature). Physics is simply the science of observation and measurement. Activity 1.2 i. From the explanations given above, describe in your own words what physics is. ii. P1.40 see the solution P1.42 1.38 km P1.44 either 3.46 or -3.46 P1.46 316 m P1.48 (a) ρ = 2.70 g/cm3 + 1.19 g/cm4 x (b) 1.39 kg P1.50 (a) 478 cm3/s (b) 0.225 cm/s (c) When the balloon radius is twice as large, its surface area is four times larger. The new volume added in one increment of time in the inflation process is equal to this larger area times an extra radial thickness that is one- Typically, however, we record a measurement to the precision of the measurement tool and