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Properties of Bulk Matter Test - 3

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Properties of Bulk Matter Test - 3
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Weekly Quiz Competition
  • Question 1
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    When a long spring is stretched by 2 cm, its potential energy is U. If the spring is stretched by 10 cm, its potential energy will be
  • Question 2
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    compared to glass copper expands

    Solution

    The coefficient of linear expansion is more for copper then that of glass.

  • Question 3
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    Which of the following is the most elastic?
  • Question 4
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    Heat flows from one body to another if

    Solution

    Heat is the amount of energy flowing from one body of matter to another spontaneously due to their temperature difference.

  • Question 5
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    The work done in which of the following processes is zero?
  • Question 6
    1 / -0

    Heat is a form of

    Solution

    Heat is a form of energy.  Heat energy is transferred from one body to another as the result of a difference in temperature. Its SI unit is Joule.

    Hence, the correct option is (D).

  • Question 7
    1 / -0
    In a stationary lift, a man is standing with a bucket full of water, having a hole at its bottom. The rate of flow of water through this hole is R0. If the lift starts to move up and down with the same acceleration such that the water flows at the rate of Ru and Rd, then
  • Question 8
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Which of the following is not a unit of Young's modulus?
  • Question 9
    1 / -0
    In an isochoric process,
  • Question 10
    1 / -0
    The thermal conductivity of a rod is 2. What is its thermal resistivity?
  • Question 11
    1 / -0
    If the difference in temperature on the two sides of a wall increases from 100oC to 200oC, its thermal conductivity
  • Question 12
    1 / -0
    A square wire frame of size L is dipped in a liquid. On taking it out, a membrane is formed. If the surface tension of the liquid is T, then the force acting on the frame will be
  • Question 13
    1 / -0
    A wire of length 2 m is made from 10 cc of copper. A force F is applied so that its length increases by 2 mm. Another wire of length 8 m is made from the same volume of copper. If the force F is applied to it, its length will increase by
  • Question 14
    1 / -0
    In which mode of transmission do heat waves travel along a straight line with the speed of light?
  • Question 15
    1 / -0
    If a liquid does not wet a glass, then its angle of contact is
  • Question 16
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    Directions: In the following question, a statement of assertion is given, followed by a corresponding statement of reason just below it. Mark the correct answer as

    (a) if both assertion and reason are true, and the reason is the correct explanation of the assertion
    (b) if both assertion and reason are true, but the reason is not the correct explanation of the assertion
    (c) if assertion is true, but reason is false
    (d) if both assertion and reason are false

    Assertion:     It is hotter over the top of fire than at the same distance on the sides.
    Reason:     Air surrounding the fire conducts more heat upwards.  
  • Question 17
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    A copper bar of length 1 m and cross-sectional area 10 x 10-2 m2 has its one end maintained at 100oC by means of 0.4 kW electric heater. What is the temperature of the other end in steady state, given that the thermal conductivity of copper is 400 W/mK?
  • Question 18
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    A wire of length L and area of cross-section A is stretched through a distance of x metres by applying a force F along the length. The work done in this process is (Y is Young's modulus of the material)
  • Question 19
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    The ice and steam point have values 32∘F and 212∘F respectively, on the Fahrenheit scale. Corresponding values on the Centigrade scale are

  • Question 20
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    In streamline flow of a liquid, the total energy of the liquid is constant at
  • Question 21
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    Which of these materials has low coefficient of volume expansion αV ?

    Solution

    Glass is a ceramic material made from silica.So that it has lower coefficient of volume expansion in comparison to metal and liquid.

  • Question 22
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    If the radius of a soap bubble is four times that of another, then the ratio of their excess pressures will be
  • Question 23
    1 / -0
    Two small drops of mercury, each of radius 'r', form a single large drop. The ratio of surface energy before and after this change will be
  • Question 24
    1 / -0
    A spinner swings a cricket ball due to 
  • Question 25
    1 / -0
    A beaker is completely filled with water at 4oC. It will overflow if it is
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