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Day 568: JEE Mains Physics

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

  1. Question 1

    Motion in a Plane. Asked once: 28 Jun 2022

    2
    A particle of mass mm is moving in a circular path of constant radius rr such that its centripetal acceleration (a) is varying with time tt as a=k2rt2a =k^{2}rt^{2}. where kk is a constant. The power delivered to the particle by the force acting on it is given as

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  2. Question 2

    Motion in a Straight Line. Asked once: 28 Jul 2022

    2
    A NCC parade is going at a uniform speed of 9 km/h9\text{ }km/h under a mango tree on which a monkey is sitting at a height of 19.6 m19.6\text{ }m. At any particular instant, the monkey drops a mango. A cadet will receive the mango whose distance from the tree at time of drop is: (Given g=9.8 m/s2g = 9.8\text{ }m/s^{2} )

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  3. Question 3

    Ray Optics. Asked once: 25 Jan 2023

    98
    The light rays from an object have been reflected towards an observer from a standard flat mirror, the image observed by the observer are: - A. Real B. Erect C. Smaller in size then object D. Laterally inverted Choose the most appropriate answer from the options given below:

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  4. Question 4

    Semiconductor Electronics. Asked once: 22 Jan 2025

    88
    ABY
    001
    010
    100
    111
    To obtain the given truth table, following logic gate should be placed at GG :

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  5. Question 5

    System of Particles and Rotational Motion. Asked once: 29 Jul 2022

    6
    Two bodies of mass 1 kg1\text{ }kg and 3 kg3\text{ }kg have position vectors i^+2j^+k^\widehat{i}+ 2\widehat{j}+\widehat{k} and −3i^−2j^+k^- 3\widehat{i}- 2\widehat{j}+\widehat{k} respectively. The magnitude of position vector of centre of mass of this system will be similar to the magnitude of vector :

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