Which of the following is not a dimensionless quantity

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Plank's constant. Dielectric constant. Solid engle. A dimensionless quantity. Which one of the following is not dimensionless? The dimensionless quantity is. Which of the following is not a dimensionless quantity?

Which of the following is not a dimensionless quantity

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The dimension of any physical quantity expresses its dependence on the base quantities as a product of symbols or powers of symbols representing the base quantities. Figure lists the base quantities and the symbols used for their dimension. For example, a measurement of length is said to have dimension L or L 1 , a measurement of mass has dimension M or M 1 , and a measurement of time has dimension T or T 1. Like units, dimensions obey the rules of algebra. Thus, area is the product of two lengths and so has dimension L 2 , or length squared. Similarly, volume is the product of three lengths and has dimension L 3 , or length cubed. Physicists often call dimensionless quantities pure numbers. Physicists often use square brackets around the symbol for a physical quantity to represent the dimensions of that quantity. The importance of the concept of dimension arises from the fact that any mathematical equation relating physical quantities must be dimensionally consistent, which means the equation must obey the following rules:.

Which of the following is not a dimensionless quantity

In order to be able to give an answer, we need certain measurable quantities as input - in the present case, the mass of the box and the height of a floor. Then, using our laws of physics, we will be able to produce another measurable quantity as our answer - here the amount of work needed. Of course, you could check this answer, and thus validate our physical model of reality, by measuring the quantity in question. The term we use to express this is, rather unfortunately, to say that physical quantities have a dimension - not to be confused with length, height and width. Anything that has a dimension can be measured, and to do so we use units - though there may be different units in which we measure the same quantity, such as centimeters and inches for length. When measuring the same quantity in different units, you can always convert between them - there are 2. We will encounter only three different basic quantities, which have the dimensions of length L , time T , and mass M.

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Haryana B. C Solid engle. Which of the following is the correct match of the column A with column-B? Important Exams. RBI Grade B. Navy Tradesman Mate. Bihar Primary Teacher. CRPF Constable. A Plank's constant. CWC Assistant Engineer. Vizag Steel Junior Trainee. MP Cooperative Bank Clerk. The correct Answer is: A Solid angle, strain and dielectric constant are dimensionless constant. GATE Chemistry. ISRO Assistant.

Dimensionless quantities , also known as quantities of dimension one [1] are implicitly defined in a manner that prevents their aggregation into units of measurement. For instance, alcohol by volume ABV represents a volumetric ratio. Its derivation remains independent of the specific units of volume used; any common unit may be applied.

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