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Physics Test - ...

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  • Question 1
    1 / -0

    A circular loop of radius \(R\), carrying current \(I\), lies in the \(X-Y\) plane with its center at the origin. The total magnetic flux through the \(X-Y\) plane is:

  • Question 2
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    What should be the angular speed with which the earth have to rotate on its axis so that a person on the equator would weight \(\frac{3}{5}\)th as much as present?

  • Question 3
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    If \(Y, K\) and \(\eta\) are the values of Young's modulus, bulk modulus and modulus of rigidity of any material respectively. Choose the correct relation for these parameters.

  • Question 4
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    On interchanging the resistances, the balance point of a meter bridge shifts to the left by 10 cm. The resistance of their series combination is 1kΩ. How much was the resistance on the left slot before interchanging the resistances?

  • Question 5
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    Consider the circuit shown in the above figure. With switch \({S}_{1}\) closed and the other two switches open, the circuit has a time constant \(\tau_{{C}} .\) With switch \({S}_{2}\) closed and the other two switches open, the circuit has a time constant \(\tau_{{L}}\). With switch \({S}_{3}\) closed and the other two switches open, the circuit oscillates with a period \({T}\). Find the \(t\)

  • Question 6
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    What is the effect on the interference fringes in Young's double slit experiment if the width of the source slit is increased?

  • Question 7
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    A laser device produces amplification in the:

  • Question 8
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    Which of the following process is used to do maximum work done on the ideal gas if the gas is compressed to half of its initial volume?

  • Question 9
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    The universal constant of gravitation _________.

  • Question 10
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    A spherical surface of radius of curvature \(R\) separates air (refractive index \(1.0\)) from glass (refractive index \(1.5\)). The centre of curvature is in the glass. A point object \(P\) placed in air is found to have a real image \(Q\) in the glass. The line \(PQ\) cuts the surface at point \(O\) and \(PO\) = \(OQ\). The distance \(PO\) is equal to

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