PYQ Vault

Day 601: JEE Mains Physics

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

  1. Question 1

    Ray Optics. Asked once: 2021 Paper 21

    1
    Curved surfaces of a plano-convex lens of refractive index μ1\mu_{1} and a plano-concave lens of refractive index μ2\mu_{2} have equal radius of curvature as shown in figure. Find the ratio of radius of curvature to the focal length of the combined lenses.

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  2. Question 2

    Semiconductor Electronics. Asked once: 13 Apr 2023

    18
    For the following circuit and given inputs AA and BB, choose the correct option for output ' YY '

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  3. Question 3

    System of Particles and Rotational Motion. Asked once: 2021 Paper 10

    15
    A solid cylinder of mass mm is wrapped with an inextensible light string and, is placed on a rough inclined plane as shown in the figure. The frictional force acting between the cylinder and the inclined plane is: [The coefficient of static friction, μs\mu_{s}, is 0.4]

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  4. Question 4

    Current Electricity. Asked once: 27 Jan 2024

    92
    Wheatstone bridge principle is used to measure the specific resistance (S1)\left( S_{1} \right) of given wire, having length LL, radius rr. If XX is the resistance of wire, then specific resistance is: S1=X(πr2L)S_{1}= X\left( \frac{\pi r^{2}}{L} \right). If the length of the wire gets doubled then the value of specific resistance will be:

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  5. Question 5

    Electrostatics. Asked once: 8 Apr 2023

    15
    Graphical variation of electric field due to a uniformly charged insulating solid sphere of radius RR, with distance rr from the centre OO is represented by:

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