A wire with a radius of 5mm is hung freely from the ceiling. A load of 5N is applied to its free end. Find the elongation in the wire if its volume is 7.85*10^-5m^3 & young’s modulus is 10^11N/m^2.(a) 6.21*10^-7m(b) 7.00*10^-7m(c) 6.36*10^-7m(d) 8.00*10^-9mThis question was addressed to me in a job interview.I'm obligated to ask this question of Solids Mechanical Properties topic in chapter Mechanical Properties of Solids of Physics – Class 11

A wire with a radius of 5mm is hung freely from the ceiling. A load of

1.	A wire with a radius of 5mm is hung freely from the ceiling. A load of 5N is applied to its free end. Find the elongation in the wire if its volume is 7.8510^-5m^3 & young’s modulus is 10^11N/m^2.(a) 6.2110^-7m(b) 7.0010^-7m(c) 6.3610^-7m(d) 8.00*10^-9mThis question was addressed to me in a job interview.I'm obligated to ask this question of Solids Mechanical Properties topic in chapter Mechanical Properties of Solids of Physics – Class 11
Answer» Right option is (c) 6.3610^-7m Explanation: The INITIAL length of wire is VOL / πr^2= 7.8510^-5/ π0.005^2 = 1m. Stress = Ystrain. F/A = YΔl / l. Δl = F/A l/Y= (5/πr^2)(1/10^11) = 6.3710^-7m.

Discussion

No Comment Found

Related InterviewSolutions

Stress in a solid body is defined as ___________ per unit area.(a) external force applied(b) strain(c) pressure(d) internal forces developed due to externally applied forcesI had been asked this question during a job interview.My question is from Solids Mechanical Properties topic in section Mechanical Properties of Solids of Physics – Class 11
A completely elastic solid body partially regains its shape after removal of external force. True or False?(a) True(b) FalseThe question was posed to me during an interview.I would like to ask this question from Elastic Behaviour of Solids in chapter Mechanical Properties of Solids of Physics – Class 11
What does the area under the stress-strain curve represent?(a) Toughness(b) Total deformation(c) Modulus of elasticity(d) Average force appliedThis question was addressed to me in a job interview.My question comes from Solids Mechanical Properties in portion Mechanical Properties of Solids of Physics – Class 11
A partially elastic body can never be permanently deformed. True or False?(a) True(b) FalseI had been asked this question by my college director while I was bunking the class.This interesting question is from Elastic Behaviour of Solids topic in portion Mechanical Properties of Solids of Physics – Class 11
Which of the following statements is correct for brittle materials.(a) It breaks soon after elastic limit is crossed(b) It shows significant plastic deformation before breaking(c) It is used to make wires(d) Stress is never proportional to strainThe question was posed to me during an internship interview.The above asked question is from Solids Mechanical Properties topic in portion Mechanical Properties of Solids of Physics – Class 11
Stress, like pressure, is always perpendicular to a plane. True or False?(a) True(b) FalseI got this question at a job interview.Question is from Solids Mechanical Properties topic in section Mechanical Properties of Solids of Physics – Class 11
Which of the following stresses causes change in density, as long as force acts on the body?(a) Shear stress(b) Compressive Stress(c) Tensile stress(d) Volumetric stressThe question was asked in quiz.This interesting question is from Solids Mechanical Properties topic in chapter Mechanical Properties of Solids of Physics – Class 11
Strain can be negative. True or False?(a) True(b) FalseThis question was posed to me in my homework.This question is from Solids Mechanical Properties in portion Mechanical Properties of Solids of Physics – Class 11
Select the correct option. B is bulk modulus.(a) Bgas > Bliquid > Bsolid(b) Bliquid > Bgas> Bsolid(c) Bsolid > Bliquid > Bgas(d) Bliquid > Bgas > BsolidI have been asked this question in quiz.This question is from Solids Mechanical Properties topic in portion Mechanical Properties of Solids of Physics – Class 11
Which of the following represents volumetric strain?(a) -ΔV/V(b) ΔV/V(c) Pressure/Volume(d) -P / (ΔV/V)I got this question in an interview.The question is from Solids Mechanical Properties in portion Mechanical Properties of Solids of Physics – Class 11

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment