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Physics Test - ...

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  • Question 1
    3 / -1

    The temperature at which the vapour pressure of a liquid becomes equals to the external (atmospheric) pressure is:

  • Question 2
    3 / -1

    If the magnetic field of a plane electromagnetic wave is given by (The speed of light \(=3 \times 10^{8} \mathrm{~m} / \mathrm{s}\) ) \(B=100 \times 10^{-6} \sin \left[2 \pi \times 2 \times 10^{15}\left(t-\frac{x}{c}\right)\right]\) then the maximum electric field associated with it is:

  • Question 3
    3 / -1

    The focal length of a convex lens is \(f\). It makes virtual image of size \(n\) times the size of the object. The distance of the object from the lens is:

  • Question 4
    3 / -1

    Liquid drop model could not explain fission in:

  • Question 5
    3 / -1

    Force can be defined on the basis of:

  • Question 6
    3 / -1

    \(\mathbf{F}_{\mathrm{g}}\) and \(\mathrm{F}_{\mathrm{e}}\) represent gravitational and electrostatic force respectively between electrons situated at a distance \(0.1 \mathrm{~m} \cdot\) \( \frac{\mathrm{F}_{\mathrm{g}}}{ \mathrm{F}_{\mathrm{e}}}\) is of the order:

  • Question 7
    3 / -1

    Consider \(\mathrm{F}_{1}\) and \(\mathrm{~F}_{2}\) be two equal and opposite force applied at an angle of \(180^{\circ}\) to each other as shown below and \(R\) is its resultant force, then what will be the magnitude of the resultant force:

  • Question 8
    3 / -1

    If 600 ml of water at 60°C is mixed with 250 ml of water at 26°C, then what would be the final temperature (in°C) of the mixture:

  • Question 9
    3 / -1

    In a common base mode if the collector and base current are 1.95 mA and 0.5 mA, then the emitter current will be:

  • Question 10
    3 / -1

    Two spherical bodies of masses \('M'\) and \('5M'\) and radii \('R'\) and \('2R'\), respectively, are released in free space with initial separation between their centres equal to \('12R'\). If they attract each other due to gravitational force only, then what is the distance covered by the smaller body just before collision?

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