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Physics Test - ...

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  • Question 1
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    A block is moving with some speed on the horizontal rough ground, after some time it stopped. What can be the possible reasons for it?

  • Question 2
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    Heat is flowing through a conductor of length \(I\) from \(x=0\) to \(x=1\). If its thermal resistance per unit length is uniform, which of the following graph is correct?

  • Question 3
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    When one mole of monoatomic gas is mixed with one mole of a diatomic gas, Then the equivalent value of \(\gamma\) for the mixture will be (vibration mode neglected)

  • Question 4
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    A \(40 \mu \mathrm{F}\) capacitor is connected to a \(200 \mathrm{~V}, 50 \mathrm{~Hz}\) ac supply. The rms value of the current in the circuit is, nearly:

  • Question 5
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    Two radioactive nuclei \(P\) and \(Q,\) in a given sample decay into a stable nucleus \(R\). At time \(t=0,\) the number of \(P\) species are \(4 N_{o}\) and that of \(Q\) are \(N_{o} .\) Half-life of \(P\) (for conversion to \(R\) ) is \(1 min\) whereas that of \(Q\) is \(2 min\). Initially there are no nuclei of \(R\) present in the sample. When number of nuclei of \(P\) and \(Q\) are equal, the number of nuclei of \(R\) present in the sample would be:

  • Question 6
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    Earth receives energy from the Sun through which of the following methods of heat transfer?

  • Question 7
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    The escape velocity of a body depends upon mass as:

  • Question 8
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    By what factor, the electric force between two electrons greater than the gravitational force between them?

  • Question 9
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    The scientist who first observed the relation between electricity and magnetism is:

  • Question 10
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    Which of the following process is used for the retrieval of information from the carrier wave at the receiver?

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