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Physics Test-15...

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  • Question 1
    4 / -1

    The velocity at which the laminar flow stops is known as _________.

  • Question 2
    4 / -1

    Which of the following statements about electric field lines associated with electric charges is false?

  • Question 3
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    Calculate the resistance of the diode at I = 15 mA.From the I-V characteristics,

  • Question 4
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    A balloon is rising with a velocity of \(10\) m/s. When it is at a height of \(40\) m above the earth, a packet is dropped from it. By what time will it take to reach the ground?

  • Question 5
    4 / -1

    A non-dimensional number generally associated with natural convection heat transfer is _________.

  • Question 6
    4 / -1

    The limit of resolution of microscope, if the numerical aperture of microscope is \(0.12\), and the wavelength of light used is \(600 nm\), is:

  • Question 7
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    Among the given dimensionless physical quantities, which quantity have a unit?

  • Question 8
    4 / -1

    A \(20 {~g}\) bullet pierces through a plate of mass \({M}_{1}=1 {~kg}\) and then comes to rest inside the second plate of mass \({M} _2=2.98 {~kg}\), as shown in the figure. It is found that the two plates initially at rest, now move with equal velocities. Find the percentage loss in the initial velocity of the bullet when it is between \({M}_{1}\) and \({M}_2 .\) Neglect any loss of material of the plates due to the action of a bullet

  • Question 9
    4 / -1

    The two charged particles of charge \(12 C\) and \(-6 C\) are separated by a distance of \(3 m\). Find the electrostatic force between the two particles. (k=\(9×10^{9}\))

  • Question 10
    4 / -1

    \(\mathrm{AC}\) voltage is \(\mathrm{V}=200 \sin 300 \mathrm{t}\) and if \(\mathrm{R}=10 \Omega\) and \(\mathrm{L}=800 \mathrm{mH}\), the peak value of current is:

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