NCERT Class 11 Physics MCQ Chapter 8 Mechanical Properties of Solids Solutions, AHSEC Class 11 Physics Multiple Choice Question Answer to each chapter is provided in the list so that you can easily browse throughout different chapters NCERT Class 11 Physics MCQ Chapter 8 Mechanical Properties of Solids Question Answer and select needs one.
Class 11 Physics MCQ Chapter 8 Mechanical Properties of Solids
Also, you can read the SCERT book online in these sections NCERT Class 11 Physics Multiple Choice Solutions by Expert Teachers as per SCERT (CBSE) Book guidelines. AHSEC Class 11 Physics MCQ Solutions. These solutions are part of SCERT All Subject Solutions. Here we have given HS 1st Year Physics Objective Type Question Answer for All Subjects, You can practice these here.
Mechanical Properties of Solids
Chapter: 8
| PART – ⅠⅠ |
MULTIPLE CHOICE QUESTION ANSWER
1. Which of the following materials exhibit plastic behaviour?
(i) Steel.
(ii) Rubber.
(iii) Putty.
(iv) Spring.
Ans: (iii) Putty.
2. Which one of the following is not a unit of Young’s modulus?
(i) N/m²
(ii) Pascal.
(iii) Dyne/cm²
(iv) Joule.
Ans: (iv) Joule.
3. Which of the following has no dimensions?
(i) strain.
(ii) angular velocity.
(iii) momentum.
(iv) angular momentum.
Ans: (i) strain.
4. The force per unit area developed in a material when it is deformed under an external force is known as:
(i) Strain.
(ii) Stress.
(iii) Elasticity.
(iv) Plasticity.
Ans: (ii) Stress.
5. Select the correct order with regard to elasticity of materials.
(i) Steel > Glass > Rubber.
(ii) Glass > Rubber > Steel.
(iii) Rubber > Glass > Steel.
(iv) Rubber > Steel > Glass.
Ans: (i) Steel > Glass > Rubber.
6. Shearing strain is the ratio of:
(i) Change in length to the original length.
(ii) Relative displacement to the original length.
(iii) All of the above.
(iv) None of the above.
Ans: (ii) Relative displacement to the original length.
7. Hooke’s law states that _________.
(i) Stress is always proportional to strain.
(ii) Stress is proportional to strain before ultimate tensile strength.
(iii) Stress is proportional to strain under elastic limit.
(iv) Stress and strain are never directly proportional.
Ans: (iii) Stress is proportional to strain under elastic limit.
8. Hooke’s law is valid up to:
(i) Plastic limit.
(ii) Proportional limit.
(iii) Yield point.
(iv) Breaking point.
Ans: (ii) Proportional limit.
9. A substance that can undergo large permanent deformation is called:
(i) Elastic.
(ii) Plastic.
(iii) Brittle.
(iv) Malleable.
Ans: (ii) Plastic.
10. The stress corresponding to fracture point is called ______.
(i) Ultimate stress.
(ii) Breaking stress.
(iii) Yield stress.
(iv) Plastic stress.
Ans: (ii) Breaking stress.
11. Which material has a higher Young’s modulus, indicating it is stiffer?
(i) Steel.
(ii) Rubber.
(iii) Copper.
(iv) Glass.
Ans: (i) Steel.
12. Which of the following statements is correct for brittle materials.
(i) It breaks soon after the elastic limit is crossed.
(ii) It shows significant plastic deformation before breaking.
(iii) It is used to make wires.
(iv) Stress is never proportional to strain.
Ans: (i) It breaks soon after the elastic limit is crossed.
13. For small deformations in materials, the relationship between stress and strain is generally:
(i) Directly proportional.
(ii) Inversely proportional.
(iii) Quadratic.
(iv) Exponential.
Ans: (i) Directly proportional.
14. What does the area under the stress-strain curve represent?
(i) Toughness.
(ii) Total deformation.
(iii) Modulus of elasticity.
(iv) Average force applied.
Ans: (i) Toughness.
15. The dimension of stress is the same as that of:
(i) Force.
(ii) Pressure.
(iii) Strain.
(iv) Displacement.
Ans: (ii) Pressure.
