CBSE Class 11 Physics Mechanical Properties of Solids MCQs, Multiple Choice Questions (2023)

FAQs

What are the examples of mechanical properties of solids Class 11 physics? ›

Examples of mechanical properties are elasticity, plasticity, strength, abrasion, hardness, ductility, brittleness, malleability and toughness.

The NCERT Exemplar Class 11 Physics Chapter 3 Motion in a Straight Line is a significant resource for students who are preparing for CBSE Class 11 examination and entrance examinations like JEE Main, JEE Advanced, NEET, and other state entrance examinations.

The major mechanical properties of solids are Elasticity, Plasticity, Ductility and Strength. Elasticity is defined as the property of a solid regaining the original shape once the external force is removed.

Mathematically, Hooke's law states that the applied force F equals a constant k times the displacement or change in length x, or F = kx.

The deformation formula according to Hooke's law is; σ = E * ε, where σ is the force applied, E is the spring or elastic constant (called young's modulus), and ε is the extension or resulting strain.

1. Heat and Thermodynamics. It is probably the most difficult yet one of the important topics for JEE Main Physics. Students who do not understand the application part of the topic often find it difficult to solve questions related to the topic.

The easiest chapters among all the syllabus is the modern Physics, Radioactivity, kinematics( it is very scoring), Thermodynamics, waves and optics.

It is a very complex and complicated combination of computer science, mathematics, and basic science. Students have to learn and memorize countless laws and definitions. You also have to use concepts like geometry, algebra, and calculus to solve physics problems.

Which is more elastic AB or C? ›

For the given question graph, the maximum value of slope will give the maximum modulus of elasticity. For the given question A has more slope than B and C. Therefore modulus of elasticity will be maximum for material A. Hence the correct answer is option 1.

Mechanical properties are also used to help classify and identify material. The most common properties considered are strength, ductility, hardness, impact resistance, and fracture toughness.

What Is Poisson's Ratio? Poisson's ratio is “the ratio of transverse contraction strain to longitudinal extension strain in the direction of the stretching force.” Here, Compressive deformation is considered negative. Tensile deformation is considered positive.

The SI unit for elasticity and the elastic modulus is the pascal (Pa). This unit is defined as force per unit area, generally a measurement of pressure, which in mechanics corresponds to stress. The pascal and therefore elasticity have the dimension L⁻¹⋅M⋅T⁻².

1) Elasticity is the property of solid material that it gains its original shape and size after the removal of applied force. 1)Plasticity is the property of solid material that it does not gain its original shape and size after the removal of applied force.

Stress and strain are two of the most important concepts in materials science and engineering. Stress refers to the force applied to a material per unit area, while strain is a deformation or change in the shape of the material that results from the applied force.

The conventional symbols for stress are the Greek letters σ and τ and the symbols used for strain are ε and γ.

How to pass a test in one hour? ›

Most people (and tutors) tell students that, if they have no idea on a question, to just guess answer choice “C” — the middle answer on most multiple choice tests.

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Multiple choice test items are less susceptible to guessing than true/false questions, making them a more reliable means of assessment. The reliability is enhanced when the number of MC items focused on a single learning objective is increased.

Generally easiness of chapter in Mathematics depends upon the priority of a person's interest. However some chapters like set theory, mathematical induction, A.P, G.P, differentiation, matrix in class 11 and 12 are considered to less complicated compared to other chapters.

Which subjects are toughest in class 11? ›

Which are the toughest subjects in CBSE Class 11? For the students of Class 11, Physics is acknowledged as one of the most difficult subjects of CBSE as one needs to have a good understanding of the various concepts of Mathematics in the subject and most of the students find maths difficult to practice and study.

The simplest science chapter in class 10 is chemical reactions.

Why is Physics harder than Math? Answer: Physics demands problem-solving skills that can be developed only with practice. It also involves theoretical concepts, mathematical calculations and laboratory experiments that adds to the challenging concepts.

Woven elastic—or “no roll”—is the strongest garment elastic. This elastic is easily identified by its horizontal and vertical ribs. This variety of elastic does not become more narrow as it stretches and does not lose resiliency when sewn.

If price elasticity is greater than 1, the good is elastic; if less than 1, it is inelastic. If a good's price elasticity is 0 (no amount of price change produces a change in demand), it is perfectly inelastic.

Thus, the steel possesses the highest elasticity among the given materials.

The mechanical property of Fluids is such as viscosity and surface tension.

Is Young's modulus a mechanical property? ›

Young's modulus, also known as the tensile modulus, elastic modulus or traction modulus (measured in Pa, which is a pressure unit(N.m^-2; 10MPa is equivalent to 1Kg force per square millimeter) is a mechanical property of linear elastic materials.

Tensile strength is a mechanical property that is often used to determine critical design parameters.

Physical characteristics of metal are things such as density, melting point, conductivity, and coefficient of expansion. Mechanical properties of an alloy are how the metal performs when different forces are applied to them. Mechanical characteristics include things such as strength, ductility, and wear resistance.

Mechanical properties of materials

Mechanical properties include, among others, density, hardness and elasticity.

Mechanical properties of solids elaborates the characteristics such as the resistance to deformation and their strength. Strength is the ability of an object to withstand the applied stress, to what extent can it bear the stress. Resistance to deformation is how resistant any object is to the change of shape.

Examples of mechanical properties include modulus of elasticity, tensile strength, hardness, ductility, impact resistance, compression modulus and fatigue limit.

The most common properties considered are strength, ductility, hardness, impact resistance, and fracture toughness.

The mechanical properties of any structure depend on two factors: the geometry of the structure and the properties of the material from which that structure was made.

tensile stress = F ⊥ A . tensile stress = F ⊥ A . 12.34. Tensile strain is the measure of the deformation of an object under tensile stress and is defined as the fractional change of the object's length when the object experiences tensile stress. tensile strain = Δ L L 0 .

What are three mechanical properties of solids? ›

Mechanical properties are those properties of solids which define its solidity. These properties include plasticity, elasticity, strength, and ductility.

As per the chapter, Mechanical Properties of Solid, Hooke's law expresses the relationship between the two main mechanical properties of solids- stress, and strain. It states that, within an elastic range, the strain within an object (consider a spring in this case) is proportionate to the stress applied to it.

Some mechanical properties can be assessed using different types of tests. For example, toughness can be determined with a Charpy V-notch test or an Izod test, and hardness can be evaluated with Vickers, Brinell and Rockwell tests.

There are two main categories of solids—crystalline solids and amorphous solids. Crystalline solids are those in which the atoms, ions, or molecules that make up the solid exist in a regular, well-defined arrangement.