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Physics Test - ...

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  • Question 1
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    A solid sphere rolls down from the top of an inclined plane, 7m high, without slipping. Its Linear speed at the foot of plane is g = 10 m/s2)

  • Question 2
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    Which of the following is the dimensional formula for electric polarisation?

  • Question 3
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    A vector P has X and Y components of magnitude 2 units and 4 units respectively. A vector Q along the negative X-axis has magnitude 6 units. The vector (Q - P) will be

  • Question 4
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    When a large bubble rises from the bottom of a water lake to its surface, then its radius doubles, if the atmospheric pressure is equal to the pressure of height Hof a certain water column, then the depth of the lake will be

  • Question 5
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    In the network shown cell E has internal resistance r and the galvanometer shows zero deflection. If the cell is replaced by a new cell of 2E and internal resistance 3r keeping ling everything else identical, then

  • Question 6
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    [L2M1T-2] are the dimensions of

  • Question 7
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    If the radius of the circular path and frequency of revolution of a particle of mass m are doubled, then the change in its kinetic energy will be (Eiand Erare the Initial and final kinetic energies of the particle respectively.)

  • Question 8
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    The rms speed of oxygen molecule in a gas is u, If the temperature is doubted and the molecules dissociates into two atoms, the rms speed will be

  • Question 9
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    Eight identical drops of water faking through the air with a uniform velocity of 10 cm/s combines to form a single drop of big size, then the terminal velocity of the big drop will be

  • Question 10
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    A body of mass m is performing a UCM in a circle of radius r with speed v. The work done by the centripetal force in moving it through (2/3)rd of the circular path is

  • Question 11
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    The phenomenon of interference is based on

  • Question 12
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    A magnetizing field of 5000 A/m produces a magnetic flux of 4 x 10-5Wb in an iron rod of cross-sectional area 0.4 cm2. The permeability of the rod in Wb/A-m, is

  • Question 13
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    A block of mass M is pulled along a smooth horizontal surface with a rope of mass m by force F. The acceleration of the block will be

  • Question 14
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    In hydrogen emission spectrum , for any series, the principthe al quantum number is n.

    Corresponding maximum wavelength λis (R = Rydbergs constant)

  • Question 15
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    For formation of beats, two sound notes must have

  • Question 16
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    The total energy of a simple harmonic oscillator is proportional to

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