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Day 615: JEE Mains Physics

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

  1. Question 1

    Semiconductor Electronics. Asked once: 28 Jul 2022

    109
    An n.p.n transistor with current gain β=100\beta = 100 in common emitter configuration is shown in figure. The output voltage of the amplifier will be

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  2. Question 2

    Current Electricity. Asked once: 1 Feb 2023

    119
    In the given circuit, the value of ∣I1+I3I2∣\left| \frac{I_{1}+I_{3}}{I_{2}} \right| is____

  3. Question 3

    Electrostatics. Asked once: 25 Jul 2022

    26
    The volume charge density of a sphere of radius 6 m6\text{ }m is 2μCcm−32\mu Ccm^{- 3}. The number of lines of force per unit surface area coming out from the surface of the sphere is ____×1010NC−1\_\_\_\_ \times10^{10}NC^{- 1}.[Given: Permittivity of vacuum  ϵ0=8.85×10−12C2 N−1−m−2]\left. \ \epsilon_{0}= 8.85 \times10^{- 12}C^{2}{\text{ }N}^{- 1}-m^{- 2} \right\rbrack

  4. Question 4

    Semiconductor Electronics. Asked once: 28 Jul 2022

    19
    Identify the solar cell characteristics from the following options:

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  5. Question 5

    Current Electricity. Asked once: 1 Feb 2023

    92
    Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: For measuring the potential difference across a resistance of 600Ω600\Omega, the voltmeter with resistance 1000Ω1000\Omega will be preferred over voltmeter with resistance 4000Ω4000\Omega. Reason R: Voltmeter with higher resistance will draw smaller current than voltmeter with lower resistance. In the light of the above statements, choose the most appropriate answer from the options given below.

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