Test Index

JAMB Physics 2024 Paper

© africaexams.com

Question : 20

Total: 125

The dimension of young's modulus,E is given by

MLT $^{-1}$
MT $^{-2}$
ML $^{-1}$ T $^{-2}$
M $^{-1}$ T

Solution:

Concept:

Young's modulus is the ratio of stress to strain.

Explanation:

Stress is defined as force per unit area.

The dimension of force is

MLT^{-2}

.

The dimension of area is

L^{2}

.

Therefore, the dimension of stress is

\frac{MLT^{-2}}{L^{2}} = ML^{-1}T^{-2}

.

Strain is a dimensionless quantity.

Hence,

E = \frac{\text{stress}}{\text{strain}}

has the dimension of stress, which is

ML^{-1}T^{-2}

.

Answer:

C.

ML^{-1}T^{-2}

© africaexams.com

Go to Question:

Prev Question

Next Question