Question

Which of the following has not been
expressed in proper units?
1) stress/strain= N / m
2) surface tension =N/m
3) Energy = kg × m2/sec2
4) Power = joule/sec

Answer 1

Answer:

Option A

Hope it may help you

Answer 2

hi dear :)

Answer:

option A = stress/strain

BECAUSE

stress unit = N/m^2

strain is dimensionless

hence formula should be N/m^2

• SURFACE TENSION = force/length = N/m

• ENERGY = force(ma)* displacement (length ) = ( M m/s^2 * L ) = kg m^2/sec^2

• POWER = WORK/ TIME = JOULE/SEC

Thanks:)