28/03/2020Deformation of Forces – Hooke's Law and Young's Modulus(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your Deformation of Solids - Hookes Law and Youngs Modulus(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. Material D demonstrates which of the following properties Strong but not ductile Brittle Ductile Plastic2. A stress that changes one dimension only is called Linear strain Linear stress compressive stress Volumetric stress3. The graph shows the extension of a piece of copper wire as the load on it is increased. What does the graph show? At a certain load the wire becomes harder to extend. At a certain load the wire becomes easier to extend. The load and extension are inversely proportional for all loads. The load and extension are directly proportional for all loads.4. For higher intermolecular bond strength, value of elastic modulus is higher. True False5. A spring balance is calibrated to give readings in newtons. The graph shows how the length of the spring varies with the load. A load causes the spring of the balance to extend by 3cm. What is the balance reading? 10N 3N 15N 5N6. The ratio of volumetric stress to volumetric strain is called Bulk modulus Shear modulus Young's modulus Shear strain7. By altering composition or heat treatment, elastic modulus can be increased to very high orders. True False8. The Y axis is used to plot which of the following Stress Strain9. The area defined by the dotted line labeled A refers to Modulus of elasticity Modulus of ductility10. A spring extends by 4 cm when 10 N is suspended from it. Two of these springs are used as shown to carry a 30N load. What is the extension of each spring? 6cm 12cm 8cm 4cm11. A steel spring is stretched by a load. The load is increased. At first the extension is proportional to the load. The spring reaches its limit of proportionality at L. Which is the correct graph of the extension against load for the spring? C D B A12. Which part of the graph shows the limit of proportionality for an elastic solid? O P PQ OP13. Molecules of a solid possess Rotatory motion Translational motion Ideal arrangement Polymeric structure14. A spring extends by 6.0cm when a 15N weight is suspended from its lower end. Three of these springs are used as shown to support a 90N weight. What is the extension of each spring? 110cm 36cm 12cm 2.0cm15. What is the expression for bulk modulus? E/2(1 + v) E/ (1 – 2v) E/3(1 – 2v) E/3(1 + v)16. _____ is an anisotropic property of a crystal. Poisson's ratio Damping Elastic modulus Density17. The negative ratio between the lateral strain and the direct tensile strain is known as ______ Poisson’s ratio Engineering strain Elastic modulus True strain18. A solid having irregular arrangement of molecules is called amorphous crystalline polymeric ideal19. What is the relation between shear modulus (G) and elastic modulus (E)? G = 0.35 E G = E G = 0.75 E G = 0.50 E20. Array of points representing atoms, ions or molecules of a crystal arranged at different sites in a three-dimensional space is called compound solid substance Crystal lattice21. If the material recovers the original dimensions, when an external load is removed, this deformation is known as ______ deformation. plastic irreversible permanent elastic22. An extension-load graph is plotted to show the result of increasing the load on a spring. Which point marks the limit of proportionality for this spring? D C B A23. Yielding is a type of failure. True False24. The yellow line indicates which of the following? Strength of ductility Modulus of elasticity Pre-fracture stress load25. The table shows how the extension of a spring varies with load. Between which two loads would you find the limit of proportionality? 8N and 10N 10N and 12N 0N and 2N 14N and 16N26 out of 25Time is Up!