Which of the following quantities has no dimensions? (2019)

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Question: Which of the following quantities has no dimensions? (2019)

Options:

Correct Answer: Angle

Exam Year: 2019

Solution:

Angle is a pure number and has no dimensions, while force, energy, and pressure all have dimensions.

Which of the following quantities has no dimensions? (2019)

Which of the following quantities has no dimensions? (2019)

Step 1: Understand what dimensions mean. Dimensions refer to the physical quantities that can be measured, like length, mass, and time.
Step 2: Identify the quantities given in the question: force, energy, pressure, and angle.
Step 3: Recognize that force, energy, and pressure are all related to physical measurements and have dimensions. For example, force is measured in newtons, energy in joules, and pressure in pascals.
Step 4: Understand that an angle is a measure of rotation and is often expressed in degrees or radians. It is considered a pure number because it does not have any physical units associated with it.
Step 5: Conclude that among the given quantities, only angle has no dimensions.

No concepts available.