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Day 517: JEE Mains Physics

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

  1. Question 1

    Alternating Current. Asked once: 2021 Paper 6

    8
    For the given circuit, comment on the type of transformer used:

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  2. Question 2

    Atoms. Asked once: 26 Jul 2022

    29
    In a hydrogen spectrum,λ\lambda be the wavelength of first transition line of Lyman series. The wavelength difference will be " aλa\lambda " between the wavelength of 3rd 3^{\text{rd~}} transition line of Paschen series and that of 2nd 2^{\text{nd~}} transition line of Balmer Series where a=a =

  3. Question 3

    Current Electricity. Asked once: 21 Jan 2026 S2

    10
    A battery with EMF E and internal resistance rr is connected across a resistance RR. The power consumption in R will be maximum when :

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  4. Question 4

    Dual Nature of Radiation and Matter. Asked once: 24 Jan 2023

    10
    From the photoelectric effect experiment, following observations are made. Identify which of these are correct. A. The stopping potential depends only on the work function of the metal. B. The saturation current increases as the intensity of incident light increases. C. The maximum kinetic energy of a photo electron depends on the intensity of the incident light. D. Photoelectric effect can be explained using wave theory of light. Choose the correct answer from the options given below:

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  5. Question 5

    Electromagnetic Induction. Asked once: 26 Jul 2022

    118
    In a coil of resistance 8Ω8\Omega, the magnetic flux due to an external magnetic field varies with time as ϕ=23(9−t2)\phi =\frac{2}{3}\left( 9 -t^{2} \right). The value of total heat produced in the coil, till the flux becomes zero, will be ____\_\_\_\_ J.