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Physics Test - ...

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  • Question 1
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    Ionized hydrogen atoms and \(\alpha\)-particles with the same momenta enter perpendicular to a constant magnetic field, \(B\). The ratio of their radii of their paths \(r_{H}: r_{\alpha}\) will be:

  • Question 2
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    Bernoulli’s equation is applied to:

  • Question 3
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    A beam of light of wavelength \(600 nm\) from a distant source falls on a single slit \(1.0 mm\) wide and the resulting diffraction pattern is observed on a screen \(2 m\) away. The distance between the first dark fringes on either side of the central bright fringe is;

  • Question 4
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    The meter bridge is used to:

  • Question 5
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    A bar made of material whose Young's modulus is equal to E and Poisson's ratio to μ is subjected to the hydrostatic pressure p. Find the relationship between the compressibility β and the elastic constants E and μ.

  • Question 6
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    A nucleus has mass number \(\mathrm{A}_1\) and volume \(\mathrm{V}_1\). Another nucleus has mass number \(\mathrm{A}_2\) and volume \(\mathrm{V}_2\). If relation between mass number is \(A_2=4 A_1\), then \(\frac{V_2}{V_1}=\)____________.

  • Question 7
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    In the formula \(X=3 Y Z^{2}, X\) and \(Z\) have dimensions of capacitance and magnetic induction respectively. What is the dimension of \(Y\) in MKS system?

  • Question 8
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    A body is subjected to strain several times will not obey Hookes law due to

  • Question 9
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    The resistive network shown below is connected to a D.C. source of \(16 \mathrm{~V}\). The power consumed by the network is \(4 \mathrm{Watt}\). The value of \(R\) is:

  • Question 10
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    The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?

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