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11th Standard English Medium Physics Subject Properties of Matter Book Back 2 Mark Questions with Solution Part - II

11th Standard

    Reg.No. :
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Physics

Time : 00:30:00 Hrs
Total Marks : 10

    Part I

    5 x 2 = 10
  1. A metallic cube of side 100 cm is subjected to a uniform force acting normal to the whole surface of the cube. The pressure is 106 pascal. If the volume changes by 1.5\(\times\)10-5 m3, calculate the bulk modulus of the material.

  2. A wire of length 2 m with the area of crosssection 10-6m2 is used to suspend a load of 980 N. Calculate
    i) the stress developed in the wire
    ii) the strain and
    iii) the energy stored. Given: Y = 12 \(\times\) 1010N m−2.

  3. State Hooke’s law of elasticity. 

  4. Explain elasticity using intermolecular forces.

  5. A spring balance shows wrong readings after using for a long time. Why?

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