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Day 377: JEE Mains Physics

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

  1. Question 1

    Nuclei. Asked once: 14 Jun 2022 (same type asked 7 times) See all 7 of this type

    15
    Nucleus AA is having mass number 220 and its binding energy per nucleon is 5.6MeV5.6MeV. It splits in two fragments ' BB ' and ' CC ' of mass numbers 105 and 115. The binding energy of nucleons in ' BB ' and ' CC ' is 6.4MeV6.4MeV per nucleon. The energy QQ released per fission will be:

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  2. Question 2

    Alternating Current. Asked once: 25 Jan 2023 (same type asked 7 times) See all 7 of this type

    116
    A series LCR circuit is connected to an AC source of 220 V,50 Hz220\text{ }V,50\text{ }Hz. The circuit contains a resistance == 80Ω80\Omega, an inductor of inductive reactance XL=70ΩX_{L}= 70\Omega, and a capacitor of capacitive reactance XC=130ΩX_{C}= 130\Omega. The power factor of circuit is x10\frac{x}{10}. The value of xx is:

  3. Question 3

    Atoms. Asked once: 8 Apr 2023 (same type asked 7 times) See all 7 of this type

    113
    The ratio of wavelength of spectral lines HαH_{\alpha} and HβH_{\beta} in the Balmer series is x20\frac{x}{20}. The value of xx is___

  4. Question 4

    Ray Optics. Asked once: 2 Apr 2025 (same type asked 7 times) See all 7 of this type

    92
    A bi-convex lens has radius of curvature of both the surfaces same as 16 cm\frac{1}{6}\text{ }cm. If this lens is required to be replaced by another convex lens having different radii of curvatures on both sides (R1≠R2)\left( R_{1}\neq R_{2} \right), without any change in lens power then possible combination of R1R_{1} and R2R_{2} is :

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  5. Question 5

    Wave Optics. Asked once: 1 Feb 2023 (same type asked 7 times) See all 7 of this type

    113
    As shown in the figure, in Young's double slit experiment, a thin plate of thickness t=10μmt = 10\mu m and refractive index μ=1.2\mu = 1.2 is inserted in front of slit S1S_{1}. The experiment is conducted in air (μ=1)(\mu = 1) and uses a monochromatic light of wavelength λ=500 nm\lambda = 500\text{ }nm. Due to the insertion of the plate, central maxima is shifted by a distance of xβ0x\beta_{0}, where β0\beta_{0} is the fringe-width before the insertion of the plate. The value of the xx is