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Class 11 Physics Practice Test: Mechanical Properties of Solids - Stress and Strain
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Related Test: Class 11 Physics Practice Test: Mechanical Properties of Solids - Elastic Behaviour of Solids

Class 11 Physics Practice Test: Mechanical Properties of Solids - Stress and Strain
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6 Questions

1. Stress in a solid body is defined as ___________ per unit area.
2. A wire has a young’s modulus of 105N/m2, length 1m & radius 3mm. Assuming a uniform cross sectional area, find the radius of wire after it is under a force of 1N from both ends.
3. Stress, like pressure, is always perpendicular to a plane. True or False?
4. Strain can be negative. True or False?
5. In the given system, masses are released from rest. The young’s modulus of wire is 1011N/m2, length = 1m & radius = 2mm. Find elongation in wire when masses are moving. Assume pulley to be frictionless.
6. 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*10-5m3 & young’s modulus is 1011N/m2.

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