Question

write dimensional formula of a physical quantity whose unit is bar​

Answer 1

Heya❤️

The unit of a physical quantity follows from the dimension expression. For example, since velocity has dimension [LT−1] and length is measured in m while time is measured in s, the unit for velocity becomes m/s. Similarly, force has dimension [MLT−2] and unit kg\, m/s2. The k parameter in (1) is measured in kg\,s−2.

THanku❤️

Answer 2

The dimensional formula of the physical quantity whose unit is bar​ is [ML⁻¹T⁻²].

- The physical quantity whose unit is bar is Pressure.

- The term pressure is defined as the force acting per unit length.

- The formula of pressure is given as:

Pressure = Force / Area

⇒ P = F / A

- To calculate the dimensional formula of pressure put the dimensional formulas of force and area to get:

P = [MLT⁻²] / [L²]

⇒ P = [ML⁻¹T⁻²]