Question Detail

PHY 101 Physical Quantities, Units, and Dimensions Objective Question
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Question

Which of the following is a dimensionless quantity?
Options
A Force
B Angle
Correct Answer
C Velocity
D Acceleration
Correct Answer

Option B is the correct answer.

Detailed Explanation

An angle, measured in radians, is defined as the ratio of arc length to radius. Since it is a ratio of two lengths, its dimensions cancel out, making it a dimensionless (or pure) quantity.

Hint

A quantity is dimensionless if it is a ratio of two quantities with the same units.

Question Info

Course: PHY 101
Topic: Physical Quantities, Units, and Dimensions
Type: Objective
Difficulty: Not specified
Question 701 of 1250
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