Which one of the following quantities does no | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The unit of force per unit area is $N/m^2$ or Pascal $(Pa)$.Stress is defined as the restoring force per unit area,so it has the unit $N/m^2$.Pres

Vedclass · Accepted Answer

Strain

Vedclass · Answer

(B) The unit of force per unit area is $N/m^2$ or Pascal $(Pa)$.Stress is defined as the restoring force per unit area,so it has the unit $N/m^2$.Pressure is defined as the thrust force per unit area,so it has the unit $N/m^2$.Young's modulus of elasticity is defined as the ratio of stress to strain. Since strain is dimensionless,the unit of Young's modulus is the same as stress,which is $N/m^2$.Strain is defined as the ratio of change in dimension to the original dimension. Since it is a ratio of two similar quantities,it is a dimensionless and unitless quantity.Therefore,the correct option is $(B)$.

Which one of the following quantities does not have the unit of force per unit area?

Similar Questions

The length of an elastic string is $a$ metres when the longitudinal tension is $4 \ N$ and $b$ metres when the longitudinal tension is $5 \ N$. The length of the string in metres when the longitudinal tension is $9 \ N$ is

One end of a uniform wire of length $L$ and weight $W$ is attached rigidly to a point in the roof,and a weight $W_1$ is suspended from its lower end. If $S$ is the area of cross-section of the wire,the stress in the wire at a height $3L/4$ from its lower end is

Which of the following statements is correct?

$A$ wire of diameter $1\, mm$ breaks under a tension of $1000\, N.$ Another wire,of the same material as that of the first one,but of diameter $2\, mm$ breaks under a tension of ...... $N$.

$A$ tangential force of $100 \,N$ is applied on the top face of a cubic block of side $0.1 \,m$. If the top face is displaced by $0.02 \,cm$ relative to the bottom face,what is the tangential strain?

Vedclass Test Series

Exam Paper Generator

Online Exam Module