# What is the dimension formula?

## What is the dimension formula?

Hint – Dimension formula is the expression for the unit of a physical quantity in terms of the fundamental quantities. The fundamental quantities are mass (M), Length (L) and time (T). A dimensional formula is expressed in terms of power of M, L and T. These will specify the nature of the unit and not its magnitude.

What is dimensional equation and give example?

A relation connecting a given physical quantity in terms other physical quantities either in a single form comprising of numerator and denominator or sum or difference of two or more e.g. : s=ut+1/2at2.

What is a dimensionally correct equation?

An equation in which each term has the same dimensions is said to be dimensionally correct. All equations used in any science should be dimensionally correct.

### What is Dimension area formula?

SI unit of area is m2. Hence, the dimensional formula of area is L2, which can also be written as M0L2T0.

What is the dimensions and dimensional formula?

Dimensional formula of physical quantities

Sl. No Physical Quantity Dimensional Formula
2 Volume (V) [M0L3T0]
3 Density (d) [M1L-3T0]
4 Speed (s) [M0L1T-1]
5 Velocity (v) [M0L1T-1]

What is dimensional formula work?

= Unit of work done is Joule. Therefore, the dimension formula of work is represented as [M1 L2 T-2].

## What is dimensional formula example?

The dimensional equation helps in expressing physical quantities in terms of the base or fundamental quantities….Dimensional Equations.

Physical Quantity Dimensional Equation
Force (F) [F] = [M L T-2]
Power (P) [P] = [M L2 T-3]
Velocity (v) [v] = [M L T-1]
Density (D) [D] = [M L3 T0]

What is a dimension give an example?

A measurement of length in one direction. Examples: width, depth and height are dimensions. A line has one dimension (1D), a square has two dimensions (2D), and a cube has three dimensions (3D).

Which of the following is dimensionally correct?

so, dimensionally, pressure = energy per unit volume. option (B) is correct. dimensionally, pressure ≠ force per unit volume.

### Is a dimensionally correct equation always correct?

A dimensionally correct equations need not be necessarily correct physical relation. A dimensionally wrong equation is not correct mathematically too.

What is dimension and dimensional formula?

DIMENSIONS are the powers to which the fundamental quantities are raised to represent other physical quantities. DIMENSIONAL FORMULA is an expression in which dimensions of a physical quantity is represented in terms of fundamental quantities. rosariomividaa3 and 97 more users found this answer helpful.

What do you mean by dimensional formula and dimensional equation?

Dimensional Formula is the expression which shows how and which of the base quantities represent the dimensions of a physical quantity. Dimensional Equation is an equation obtained by equating a physical quantity with its dimensional formula.

## What is the formula for dimensional analysis?

The expression showing the powers to which the fundamental units are to be raised to obtain one unit of a derived quantity is called the dimensional formula of that quantity. If Q is the unit of a derived quantity represented by Q = M aL bT c, then M aL bT c is called dimensional formula and the exponents a, b and, c are called the dimensions. Aug 16 2019

What is the formula for dimensions?

Dimensional formula of a Physical Quantity. The dimensional formula is defined as the expression of the physical quantity in terms of its basic unit with proper dimensions. For example, dimensional force is. F = [M L T -2] It’s because the unit of Force is Netwon or kg*m/s 2.

What is the dimensional formula of power?

Power is defined as work done per unit time. Its formula is. Power= Work/Time. Dimensional Formula of Work= M1L2T-2 Divide it by Time T1.

### What is the dimensional formula of energy?

From above derivation we derive dimensional formula of surface energy (E) = Energy × [Area]⁻¹… equation (1) As, Energy = Force × displacement = m × a × displacement Or, it can also be written as Energy = [M¹ × M⁰ L¹ T⁻² × L¹] Therefore, the dimensional formula of energy can be written as [M¹ L² T⁻²]… equation (2)