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Day 169: JEE Mains Physics

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

  1. Question 1

    Thermodynamics. Asked once: 31 Jan 2023 (same type asked 5 times) See all 5 of this type

    10
    The pressure of a gas changes linearly with volume from AA to BB as shown in figure. If no heat is supplied to or extracted from the gas then change in the internal energy of the gas will be

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  2. Question 2

    Alternating Current. Asked once: 31 Jan 2023 (same type asked 5 times) See all 5 of this type

    25
    An inductor of 0.5mH0.5mH, a capacitor of 20μF20\mu F and resistance of 20Ω20\Omega are connected in series with a 220 V220\text{ }V ac source. If the current is in phase with the emf, the amplitude of current of the circuit is x\sqrt{x} A. The value of xx is-

  3. Question 3

    Electrostatics. Asked once: 1 Feb 2023 (same type asked 5 times) See all 5 of this type

    116
    A cubical volume is bounded by the surfaces x=0,x=a,y=0,y=a,z=0,z=ax = 0,x = a,y = 0,y = a,z = 0,z = a. The electric field in the region is given by E→=E0xı^\overrightarrow{E}=E_{0}x\widehat{\imath}. Where E0=4×104NC−1 m−1E_{0}= 4 \times10^{4}NC^{- 1}{\text{ }m}^{- 1}. If a=2 cma = 2\text{ }cm, the charge contained in the cubical volume is Q×10−14CQ \times10^{- 14}C. The value of QQ is .___ (Take  ϵ0=9×10−12C2Nm2)\left. \ \epsilon_{0}= 9 \times\frac{10^{- 12}C^{2}}{Nm^{2}} \right)

  4. Question 4

    Motion in a Plane. Asked once: 31 Jan 2024 (same type asked 5 times) See all 5 of this type

    104
    If two vectors A→\overrightarrow{A} and B→\overrightarrow{B} having equal magnitude RR are inclined at an angle θ\theta, then

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  5. Question 5

    Semiconductor Electronics. Asked once: 6 Apr 2024 (same type asked 5 times) See all 5 of this type

    96
    The acceptor level of a p-type semiconductor is 6eV6eV. The maximum wavelength of light which can create a hole would be: Given hc=1242eVnmhc = 1242eVnm.

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