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Day 97: JEE Mains Physics

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

  1. Question 1

    System of Particles and Rotational Motion. Asked 2 times: 25 Jul 2022*, 1 Feb 2024 (* = numbers or wording changed that year) See all 2 times it was asked

    26
    Three identical spheres each of mass 2M2M are placed at the corners of a right-angled triangle with mutually perpendicular sides equal to 4 m4\text{ }m each. Taking point of intersection of these two sides as origin, the magnitude of position vector of the centre of mass of the system is 42x\frac{4\sqrt{2}}{x}, where the value of xx is _____

  2. Question 2

    Oscillations. Asked 2 times: 29 Jun 2022*, 31 Jan 2024 (* = numbers or wording changed that year) See all 2 times it was asked

    29
    A particle performs simple harmonic motion with amplitude A. Its speed is increased to three times at an instant when its displacement is 2 A3\frac{2\text{ }A}{3}. The new amplitude of motion is nA3\frac{nA}{3}. The value of nn is ______ .

  3. Question 3

    Waves. Asked 2 times: 25 Jun 2022*, 31 Jan 2024 (* = numbers or wording changed that year) See all 2 times it was asked

    15
    The fundamental frequency of a closed organ pipe is equal to the first overtone frequency of an open organ pipe. If length of the open pipe is 60 cm60\text{ }cm, the length of the closed pipe will be:

    Tap an option to check your answer.

  4. Question 4

    Units and Measurements. Asked 2 times: 1 Feb 2023*, 30 Jan 2024 (* = numbers or wording changed that year) See all 2 times it was asked

    104
    If mass is written as m=kcPG−1/2 h1/2m = kc^{P}G^{- 1/2}{\text{ }h}^{1/2} then the value of PP will be: (Constants have their usual meaning with kk a dimensionless constant)

    Tap an option to check your answer.

  5. Question 5

    Current Electricity. Asked 2 times: 2021 Paper 15*, 29 Jan 2024 (* = numbers or wording changed that year) See all 2 times it was asked

    27
    A 16Ω16\Omega wire is bend to form a square loop. A 9 V9\text{ }V battery with internal resistance 1Ω1\Omega is connected across one of its sides. If a 4μF4\mu F capacitor is connected across one of its diagonals, the energy stored by the capacitor will be x2μJ\frac{x}{2}\mu J. where x=x = _______