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Units Measureme...

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  • Question 1
    1 / -0

    Convert 1 kWh into joules.

  • Question 2
    1 / -0

    If the atmospheric pressure is 106 dyne/cm2, then what is its value in SI units?

  • Question 3
    1 / -0

    What is the dimensional formula of thermal conductivity?

  • Question 4
    1 / -0

    Match the following:

    List - I List - II
    (1) Planck's constant (A) [ML-1T-2]
    (2) Gravitational constant (B) [ML-1T-1]
    (3) Bulk modulus (C) [ML2T-1]
    (4) Coefficient of viscosity (D) [M-1L3T-2]

  • Question 5
    1 / -0

    If force (F), work (W) and velocity (v) are taken as fundamental quantities, then what is the dimensional formula of time (T)?

  • Question 6
    1 / -0

    Which of the following sets of quantities has the same dimensional formula?

  • Question 7
    1 / -0

    The dimensions of ε0E2 ( where ε0 permittivity of free space, E : electric field) are

  • Question 8
    1 / -0

    The displacement of a particle moving along x-axis is given as x = at + bt2 - ct3, where t is time. The respective dimensions of a, b and c are

  • Question 9
    1 / -0

    The density of material of a cube is measured by measuring its mass and length of its side. If the maximum errors in the measurement of mass and length are 3% and 2%, respectively, then the maximum error in the measurement of density is

  • Question 10
    1 / -0

    The length, breadth and thickness of a block are given as l = 12 cm, b = 6 cm and t = 2.45 cm, respectively. The volume of the block, according to the idea of significant figures, should be

  • Question 11
    1 / -0

    Time period 'T' of a simple pendulum may depend on 'm', the mass of the bob, '', the length of the string, and 'g', the acceleration due to gravity. This means that 'T' ∝ ma gc. What are the respective values of 'a', 'b' and 'c'?

  • Question 12
    1 / -0

    The volume of a cube in m3 is equal to the surface area of the cube in m2. The volume of the cube is

  • Question 13
    1 / -0

    If 'C' and 'R' respectively denote capacitance and resistance, then what will be the dimensions of 'CR'?

  • Question 14
    1 / -0

    The velocity 'v' of a particle at time 't' is given by 'v' = at + , where 'a', 'b' and 'c' are constants. The dimensions of 'a', 'b' and 'c' are

  • Question 15
    1 / -0

    If the velocity of light 'c', gravitational constant 'G' and Planck's constant 'h' are chosen as fundamental units, then the dimensions of length 'L' in the new system will be

  • Question 16
    1 / -0

    Which of the following units denotes the dimensions [ML2/Q2], where 'Q' represents the electric charge?

  • Question 17
    1 / -0

    What are the dimensions of permittivity of free space ε0?

  • Question 18
    1 / -0

    The dimensional formula of Stefan's constant is

  • Question 19
    1 / -0

    In an experiment, the values of two resistances were measured as R1 = 5 ± 0.2 ohm and R2 = 10 ± 0.1 ohm. What is their combined resistance in series?

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