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Day 621: JEE Mains Physics

5 questions. Try each one first, then open its answer.

  1. Question 1

    Semiconductor Electronics. Asked once: 28 Jun 2022

    109
    In the given circuit the input voltage Vin V_{\text{in~}} is shown in figure. The cut-in voltage of p−np - n junction diode (D1\left( D_{1} \right. or  D2)\left. \ D_{2} \right) is 0.6 V0.6\text{ }V. Which of the following output voltage (V0)\left( V_{0} \right) waveform across the diode is correct?

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  2. Question 2

    Current Electricity. Asked once: 25 Jan 2023

    28
    In the given circuit, the equivalent resistance between the terminal A and B is ____\_\_\_\_ Ω\Omega.

  3. Question 3

    Electrostatics. Asked once: 26 Jun 2022

    99
    A parallel plate capacitor with plate area A and plate separation d=2 md = 2\text{ }m has a capacitance of 4μF4\mu F. The new capacitance of the system if half of the space between them is filled with a dielectric material of dielectric constant K=3K = 3 (as shown in figure) will be:

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  4. Question 4

    Semiconductor Electronics. Asked once: 28 Jun 2022

    112
    A Zener of breakdown voltage VZ=8 VV_{Z}= 8\text{ }V and maximum zener current, IZM=10 mAI_{ZM}= 10\text{ }mA is subjected to an input voltage Vi=10 VV_{i}= 10\text{ }V with series resistance R=100ΩR = 100\Omega. In the given circuit RLR_{L} represents the variable load resistance. The ratio of maximum and minimum value of RLR_{L} is

  5. Question 5

    Current Electricity. Asked once: 24 Jan 2023

    13
    As shown in the figure, a network of resistors is connected to a battery of 24 V24\text{ }V with an internal resistance of 3Ω3\Omega. The currents through the resistors R4R_{4} and R5R_{5} are I4I_{4} and I5I_{5} respectively. The values of I4I_{4} and I5I_{5} are:

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