- Amal Augustine
- December 30, 2025
Ultimate Guide to Elasticity and Stress Strain MCQs for Strong Physics Understanding
Elasticity and stress strain mcqs relationships form a crucial foundation in mechanics and material science. Elasticity and stress strain mcqs Questions based on Young’s modulus, breaking stress, strain energy, Poisson’s ratio, torsion, and elastic limits frequently appear in competitive exams such as JEE, NEET, CUET, SSC, and state engineering entrances. These elasticity and stress strain MCQs not only test formula application but also demand strong conceptual clarity about how materials behave under different forces. This blog compiles and explains key Elasticity and Stress Strain MCQs, to help aspirants connect theory with numerical problem-solving for maximum exam confidence.
Elasticity is one of the most fundamental and application-oriented topics in elasticity and stress strain mcqs in physics, forming the backbone of material science, mechanical engineering, and structural design . In explains how solids respond when subjected to external forces, how materials deform under stress, and how they return to their original shape once the force is removed. Elasticity and stress strain mcqs concepts on such as stress, strain, Young’s modulus, bulk modulus, shear modulus, Poisson’s ratio, elastic limit, and breaking stress are not only theoretical ideas but are directly applied in real-world systems like bridges, cranes, suspension cables, buildings, and mechanical components.
For students preparing for competitive examinations, Elasticity and stress strain MCQs are especially important because they test both conceptual understanding and numerical reasoning. Questions on elasticity and stress strain mcqs often combine multiple ideas—such as how dimensions affect stress, how energy is stored in stretched wires, or how temperature and material properties influence elasticity. Stress–strain graphs, breaking stress problems, and comparisons between ductile and brittle materials are frequently asked and require careful interpretation.
Elasticity and Stress Strain MCQs -30 Questions with Options & Answers
1.
If the length of a wire is made double and its radius is halved, then the Young’s modulus of the material will:
A. Remain the same
B. Become 8 times its initial value
C. Become one-fourth of its initial value
D. Become 4 times its initial value
Answer: A
2.
The area of cross-section of a crane rope is 2.5×10−4 m22.5 \times 10^{-4}\, m^2. To increase lifting capacity from 10 to 25 metric tons, required area is:
A. 6.25×10−4 m26.25 \times 10^{-4}\, m^2
B. 10×10−4 m210 \times 10^{-4}\, m^2
C. 1×10−4 m21 \times 10^{-4}\, m^2
D. 1.67×10−4 m21.67 \times 10^{-4}\, m^2
Answer: A
3.
Match the following correctly:
A. (a) II (b) V (c) I (d) III
B. (a) V (b) III (c) IV (d) II
C. (a) III (b) IV (c) II (d) V
D. (a) V (b) II (c) IV (d) I
Answer: B
4.
In a stress–strain curve for a metal, the yield point is:
A. P
B. Q
C. R
D. S
Answer: C
5.
A force of 500 kg-wt breaks a wire. Force needed to break another wire of same material but half area is:
A. 500 kg-wt
B. 250 kg-wt
C. 1000 kg-wt
D. 750 kg-wt
Answer: B
6.
The stress at which extension increases rapidly without much increase in load is called:
A. Elastic point
B. Plastic point
C. Breaking point
D. None of these
Answer: D
7.
A 10 kg bob is attached to a wire (length 0.3 m, breaking stress 4.8×107N/m24.8 \times 10^7 N/m^2, area 10−6m210^{-6} m^2). Maximum angular velocity is:
A. 4 rad/s
B. 8 rad/s
C. 16 rad/s
D. 32 rad/s
Answer: A
8.
A wire breaks if stretched by more than ll. If cut into two equal parts, each part can be stretched by:
A. ll
B. l/2l/2
C. 2l2l
D. l/4l/4
Answer: B
9.
A wire of length 1 m and radius 2 mm is twisted by 45°. Angle of shear is:
A. 0.09
B. 0.9
C. 9
D. 90
Answer: A
10.
According to Hooke’s law, force required to change length by ll is proportional to:
A. l−2l^{-2}
B. l−1l^{-1}
C. ll
D. l2l^2
Answer: C
11.
Energy stored in a strained wire equals:
A. 12×load×extension\frac{1}{2} \times \text{load} \times \text{extension}
B. 12×extension×stress\frac{1}{2} \times \text{extension} \times \text{stress}
C. 12×stress×strain\frac{1}{2} \times \text{stress} \times \text{strain}
D. 12×strain×load\frac{1}{2} \times \text{strain} \times \text{load}
Answer: A
12.
Force required to break a copper wire of radius 2R2R if force for radius RR is FF:
A. F/2F/2
B. 2F2F
C. 4F4F
D. F/4F/4
Answer: C
13.
From stress–strain curves of materials A and B:
A. A brittle, B ductile
B. A ductile, B brittle
C. Both ductile
D. Both brittle
Answer: B
14.
Under elastic limit, stress is:
A. Inversely proportional to strain
B. Directly proportional to strain
C. Square root of strain
D. Independent of strain
Answer: B
15.
A rod of length 2 m and radius 1 cm twisted by 0.8 rad develops shear strain:
A. 0.002
B. 0.004
C. 0.016
D. 0.16
Answer: B
16.
Wire A has twice the radius of wire B. Both carry same load. Stress on B is:
A. Same as A
B. Four times A
C. Twice A
D. Half of A
Answer: B
17.
Ratio of lateral strain to longitudinal strain is called:
A. Young’s modulus
B. Bulk modulus
C. Poisson’s ratio
D. Elastic limit
Answer: C
18.
Value of tan(90∘−θ)\tan(90^\circ – \theta) in stress–strain graph gives:
A. Young’s modulus
B. Compressibility
C. Shear strain
D. Tensile strength
Answer: A
19.
A material has Poisson’s ratio 0.5 and longitudinal strain 2×10−32 \times 10^{-3}. Percentage volume change is:
A. 0.6
B. 0.4
C. 0.2
D. 0
Answer: D
20.
Which statement is correct?
A. Shearing stress changes volume
B. Tensile stress causes no volume change
C. Shearing stress causes no shape change
D. Hydraulic stress changes volume
Answer: B
21.
Elastic potential energy density equals:
A. 12×stress×strain\frac{1}{2} \times \text{stress} \times \text{strain}
B. (strain)2×volume(\text{strain})^2 \times \text{volume}
C. strain×volume\text{strain} \times \text{volume}
D. stress×volume\text{stress} \times \text{volume}
Answer: A
22.
Elastic limit of brass is 3.5×108N/m23.5 \times 10^8 N/m^2. Maximum load is:
A. 4.12×104N4.12 \times 10^4 N
B. 5.15×104N5.15 \times 10^4 N
C. 0.55×104N0.55 \times 10^4 N
D. 1.55×104N1.55 \times 10^4 N
Answer: D
23.
A rod breaks at strain 0.2%. Young’s modulus 7×109N/m27 \times 10^9 N/m^2. Required area to support 104N10^4 N is:
A. 7.1×10−8m27.1 \times 10^{-8} m^2
B. 7.1×10−6m27.1 \times 10^{-6} m^2
C. 7.1×10−4m27.1 \times 10^{-4} m^2
D. 7.1×10−2m27.1 \times 10^{-2} m^2
Answer: C
24.
Increasing order of coefficient of elasticity:
A. Steel, rubber, copper, glass
B. Rubber, copper, steel, glass
C. Rubber, glass, steel, copper
D. Copper, glass, steel, rubber
Answer: D
25.
If length of a wire is reduced to half, it can hold:
A. Half load
B. Same load
C. Double load
D. One-fourth load
Answer: B
26.
From strain–stress curves of wires P, Q, R:
A. Elasticity of P is maximum
B. Elasticity of Q is maximum
C. Elasticity of R is maximum
D. None of these
Answer: D
27.
Copper and steel wires of same length and diameter joined end to end will have:
A. Same stress and strain
B. Same stress, different strain
C. Same strain, different stress
D. Different stress and strain
Answer: B
28.
Pressure pp is applied equally on a cube. Temperature rise needed to maintain volume is:
A. p/βp/\beta
B. p/αp/\alpha
C. pβp\beta
D. pαp\alpha
Answer: A
29.
Breaking stress of a wire depends on:
A. Material of wire
B. Length of wire
C. Radius of wire
D. Shape of cross-section
Answer: A
30.
From graph of extension vs stress at temperatures T1T_1 and T2T_2:
A. T1>T2T_1 > T_2
B. T1<T2T_1 < T_2
C. T2>T1T_2 > T_1
D. T1=T2T_1 = T_2
Answer: A
Conclusion on Elasticity and stress strain mcqs
Mastering elasticity and stress strain mcqs concepts is essential for understanding how materials respond to external forces in real-world applications such as construction, mechanical design, bridges, cranes, and engineering structures. Through these Elasticity and stress strain MCQs, learners reinforce key ideas like Young’s modulus, stress–strain relationships, Poisson’s ratio, breaking stress, elastic limit, and energy stored in strained wires—all of which are frequently tested in competitive exams and board assessments.
Practicing numerical and conceptual on elasticity and stress strain MCQs helps build clarity on how material properties depend on geometry, load, and physical constants rather than size alone. These elasticity and stress strain mcqs questions also train aspirants to interpret stress–strain graphs, compare ductile and brittle materials, and apply Hooke’s law effectively. Regular revision of such elasticity and stress strain MCQs strengthens problem-solving speed, improves accuracy, and boosts confidence for physics examinations.
Amal Augustine is the founder of ExQuizMe, a dynamic learning and quiz platform built to make education engaging, competitive, and fun. A passionate learner and an academic achiever, Amal completed his schooling at Government HSS Manjapra, graduating with 92.5% in Computer Science. He later earned his degree from St. Stephen’s College, University of Delhi, one of India’s most prestigious arts and science institutions.
Currently, Amal is pursuing his Master’s degree at National Sun Yat-sen University, Taiwan, where he continues to deepen his interest in research and technology. Throughout his school and college years, he won 50+ national-level interschool and collegiate quiz competitions, was
Beyond academics, Amal Augustine is an avid reader of science journals, a dedicated research student, and a technology enthusiast who loves programming and exploring the world of Computer Science. Through ExQuizMe, he aims to make learning accessible, enjoyable, and empowering for students across the globe.