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Day 408: MHT-CET Physics

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

  1. Question 1

    Motion in a Plane. Asked once: 11 Apr 2026 S1

    104
    The position vector of a particle is r⃗=acos⁡ωt i^+asin⁡ωt j^\vec{r} = a\cos\omega t\,\hat{i} + a\sin\omega t\,\hat{j}. Calculate the angle between its position vector and the velocity vector. (cos⁡0=1,cos⁡90=0,cos⁡60=0.5,sin⁡30=0.5,sin⁡0=0)(\cos 0 = 1, \cos 90 = 0, \cos 60 = 0.5, \sin 30 = 0.5, \sin 0 = 0)

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  2. Question 2

    Optics (Ray). Asked once: 20 Apr 2025 S1

    49
    The length of the compound microscope is 15 cm . The magnifying power for relaxed eye is 25. If the focal length of eye lens is 6 cm then the object distance for objective lens will be

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  3. Question 3

    Oscillations. Asked once: 3 May 2023 S1

    8
    A magnetic needle of magnetic moment 6×10−2 Am26\times10^{-2}\ \text{Am}^2 and moment of inertia 9.6×10−5 kg m29.6\times10^{-5}\ \text{kg m}^2 performs simple harmonic motion in a magnetic field of 0.01 T. Time taken to complete 10 oscillations is [Take π=3.14\pi=3.14]

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  4. Question 4

    Rotational Dynamics. Asked once: 22 Apr 2025 S2

    11
    A thin metal wire of length ' LL ' and mass ' MM ' is bent to form semicircular ring as shown. The moment of inertia about XX1XX^{1} is

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  5. Question 5

    Semiconductor Devices. Asked once: 15 May 2023 S2

    40
    A p-n junction diode as a rectifier converts

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