Exploring Dimensions in Physics

What is the SI unit of length?

• centimeter

• kilometer

• meter

• millimeter

Which of the following is a derived unit?

• Liter (L)

• Joule (J)

• Meter (m)

• Newton (N)

What is the dimensional formula for velocity?

• [L][T]^2

• [L]^2[T]^-1

• [L][T]^-1

• [L][T]

In dimensional analysis, what does the symbol [M] represent?

• Volume

• Mass

• Time

• Length

Which unit is used to measure force?

• Watt

• Joule

• Pascal

• Newton

What is the dimensional formula for energy?

• [M L^2 T^-1]

• [M^2 L T^-1]

• [M L^2 T^-2]

• [M L^3 T^-2]

How is pressure defined in terms of units?

• Pressure is expressed in units of liters per second (L/s).

• Pressure is measured in units of joules (J).

• Pressure is defined in units of grams per square meter (g/m²).

• Pressure is defined in units of pascals (Pa), where 1 Pa = 1 N/m².

What is the relationship between mass and weight?

• Weight is the force due to gravity acting on mass.

• Weight is independent of mass.

• Weight is the same as mass.

• Mass is the force due to gravity.

Which of the following is NOT a fundamental physical quantity?

• Speed

• Distance

• Time

• Mass

What is the purpose of dimensional analysis in physics?

• To derive the laws of thermodynamics

• To measure gravitational forces

• To calculate the speed of light

• The purpose of dimensional analysis in physics is to ensure the consistency of equations and facilitate unit conversions.