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Units and Measu...

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  • Question 1
    4 / -1

    The physical quantity which is not a unit of energy is

  • Question 2
    4 / -1

    The unit of Wien's constant b is

  • Question 3
    4 / -1

    The unit of Stefan's constant is

  • Question 4
    4 / -1

    Ampere–hour is the unit of

  • Question 5
    4 / -1

    The SI unit of gravitational potential is

  • Question 6
    4 / -1

    Which of the following set have different dimensions?

  • Question 7
    4 / -1

  • Question 8
    4 / -1

    In a screw gauge, the zero of mainscale coincides with fifth division of circular scale in figure (i). The circular division of screw gauge are 50. It moves 0.5 mm on main scale in one rotation. The diameter of the ball in figure (ii) is

  • Question 9
    4 / -1

    A student performs an experiment to determine the Young's modulus of a wire, exactly 2 m long, by Searle's method. In a particular reading, the student measures the extension in the length of the wire to be 0.8 mm with an uncertainty of ± 0.05 mm at a load of exactly 1.0 kg. The student also measures the diameter of the wire to be 0.4 mm with an uncertainty of ± 0.01 mm. Take g = 9.8 m/s2 (exact). The Young's modulus obtained from the reading is

  • Question 10
    4 / -1

    The dimensional formula of modulus of rigidity ( η ) is

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