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Physics Test - ...

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  • Question 1
    4 / -1

    A body moves with a speed of \(10\) m/s in the curved path of \(25\) m radius of curvature. If the tangential acceleration is \(3\) m/s\(^2\), then total acceleration for the body will be:

  • Question 2
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    In the series LCR circuit, the power dissipation is through:

  • Question 3
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    A solution containing active cobalt \({ }_{27}^{60} \mathrm{Co}\) having activity of \(0.8 \mu \mathrm{Ci}\) and decay constant \(\lambda\) is injected in an animal's body. If \(1 \mathrm{~cm}^{3}\) of blood is drawn from the animal's body after 10 hrs of injection, the activity found was 300 decays per minute. What is the volume of blood that is flowing in the body ? \(\left(1 \mathrm{Ci}=3.7 \times 10^{10}\right.\) decays per second and at \(t=10\) hrs \(\left.e^{-\lambda t}=0.84\right)\)

  • Question 4
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    As shown in the figure, two infinitely long, identical wires are bent by \(90^{\circ}\) and placed in such a way that the segments LP and QM are along the x-axis, while segments PS and QN are parallel to the y-axis. If \({OP}={QQ}=4 {~cm},\) and the magnitude of the magnetic field at \({O}\) is \(10^{-4} {~T},\) and the two wires carry equal currents (see figure), the magnitude of the current in each wire and the direction of the magnetic field at \({O}\) will be: \(\left(\mu_{0}=4 \pi \times 10^{-7} {NA}^{-2}\right)\)

  • Question 5
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    Power is define as________.

  • Question 6
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    The value of universal gravitational constant \(\mathrm{G}\) is ________.

  • Question 7
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    In the relation \(p=\frac{\alpha}{\beta} \mathrm{e}^{-\frac{\alpha z}{k \theta}}, p\) is the pressure, \(z\) the distance, \(k\) is Boltzmann constant and \(\theta\) is the temperature, the dimensional formula of \(\beta\) will be:

  • Question 8
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    Energy stored in a parallel plate capacitor is:

  • Question 9
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    Two bodies of masses 4 kg and 5 kg are acted upon by the same force if acceleration of lighter body is 3m/s2

  • Question 10
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    The period of oscillation of a mass \(M\) suspended from a spring of negligible mass is \(T\). If along with it another mass \(M\) is also suspended figure (b), the period of oscillation will now be:

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