Answer: [A] Quantities having units, but no dimensions : Plane angle,angular displacement, solid angle. These physical quantities possess units but they does not possess dimensional formulas. B a physical quntatity neither having units nor dimensions are trigonometric ratios,strain , specific gravity etc.

The units in which they are measured are thus called fundamental units. All other physical quantities, such as force and electric charge, can be expressed as algebraic combinations of length, mass, time, and current (for example, speed is length divided by time); these units are called derived units.

Dimensionless quantity is also known as the quantity of dimension with one as a quantity which is not related to any physical dimension. It is a pure number with dimension 1….Example Of Dimensionless Quantity With Unit.

Standards which are used to measure the fundamental quantities are called as fundamental units which are length, mass, time, temperature, current, luminous intensity, quantity of matter. Hence, magnetic field is not a fundamental quantity.

In physics, a physical quantity is any physical property that can be quantified, that is, be measured using numbers. Examples of physical quantities are mass, amount of substance, length, time, temperature, electric current, light intensity, force, velocity, density, and many others.

The examples of extensive quantity include energy, length, mass, momentum, volume, electrical charge, weight, etc. In contrast, an intensive quantity means that the system’s value of quantity is independent of the combination of quantities of its components.

A physical quantity is any phenomenon that can be measured with an instrument or be calculated for. A physical quantity can be expressed as the combination of a numerical value and a unit. For example, the physical quantity mass can be quantified as n kg, where n is the numerical value and kg is the unit.

Definition of quantity

1. 1a : an indefinite amount or number.
2. b : a determinate or estimated amount.
3. c : total amount or number.
4. d : a considerable amount or number —often used in plural generous quantities of luck— H. E. Putsch.

Magnitude (how much) and multitude (how many), the two principal types of quantities, are further divided as mathematical and physical.

Multiplication is a scalar process involving two quantities, with one quantity—the multiplier—serving as a scaling factor and specifying how the operation resizes, or rescales, the other quantity—the multiplicative unit. The rescaled result is the product of the multiplication.

Use a lot of or lots of for nouns, you cannot count and for plurals. These adverbs of quantity refer to frequency, quantity and degree. For countable and uncountable nouns use exact quantities in your answer or use a lot of / lots of. Examples: I’ve got 10 pens. I’v got a lot of pens.

Basic operations are the building blocks and rules of math. They’re like learning the rules of the road in Driver’s Ed. We know the four basic rules: add, subtract, multiply, divide. If we subtract the same number a bunch of times, we can divide.

The 7 Fundamental SI Units

The SI base units are the standard units of measurement defined by the International System of Units (SI) for the seven base quantities of what is now known as the International System of Quantities: they are notably a basic set from which all other SI units can be derived.

The standard unit of measurement used for the expression of voltage is volt which is represented by the symbol v. However, the volt is a derived SI unit of electric potential or electromotive force.