Published by:
CGP EDU Academic Team
Published on: September 12, 2026
Dyne / cm 2 is not a unit of
Text Solution
Verified by ExpertsThe correct answer is:
C
Step 1: Understand the units of the given options.
Step 2: Dyne/cm² is indeed a unit of pressure, as pressure is force per unit area, and dyne is a unit of force.
Step 3: Stress is also defined as force per unit area, so dyne/cm² is a valid unit for stress.
Step 4: Young's modulus is a measure of the stiffness of a solid material and is defined as stress/strain, where stress is measured in dyne/cm² and strain is a dimensionless quantity (no units). Hence, dyne/cm² can be used to express Young's modulus.
Step 5: Strain, on the other hand, is defined as the deformation of material divided by the original length (ΔL/L), which is dimensionless and does not utilize any units, including dyne/cm².
Therefore, the correct answer is C.
Step 2: Dyne/cm² is indeed a unit of pressure, as pressure is force per unit area, and dyne is a unit of force.
Step 3: Stress is also defined as force per unit area, so dyne/cm² is a valid unit for stress.
Step 4: Young's modulus is a measure of the stiffness of a solid material and is defined as stress/strain, where stress is measured in dyne/cm² and strain is a dimensionless quantity (no units). Hence, dyne/cm² can be used to express Young's modulus.
Step 5: Strain, on the other hand, is defined as the deformation of material divided by the original length (ΔL/L), which is dimensionless and does not utilize any units, including dyne/cm².
Therefore, the correct answer is C.
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