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Day 39: MHT-CET Physics

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

  1. Question 1

    Wave Optics. This type asked 5 times: 11 May 2024 S1, 13 Apr 2026 S1, 15 Apr 2026 S2, 12 May 2026 S2, 14 May 2026 S2. This one: 14 May 2026 S2 See all 5 of this type

    141
    If Young's double slit experiment is performed in water

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  2. Question 2

    Current Electricity. This type asked 5 times: 20 Apr 2025 S2, 21 Apr 2025 S1, 11 Apr 2026 S2, 13 May 2026 S1, 14 May 2026 S1. This one: 14 May 2026 S1 See all 5 of this type

    130
    A potentiometer wire has length LL. For a given cell of e.m.f. EE, the balancing length is L3\dfrac{L}{3} from the positive end of the wire. If the length of potentiometer wire is increased by 50%50\% then for the same cell the balance point is obtained at length (from positive end)

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  3. Question 3

    Electrostatics. This type asked 5 times: 4 May 2023 S1, 16 May 2023 S2, 10 May 2024 S2, 20 Apr 2025 S2, 14 May 2026 S1. This one: 14 May 2026 S1 See all 5 of this type

    127
    A parallel plate air capacitor has capacity CC and plate area AA. Now the space between its plates is filled by two slabs of thickness d2\dfrac{d}{2} each, having dielectric constants K1K_1 and K2K_2. Distance of separation between plates is dd. The capacity of the capacitor is (ε0\varepsilon_0 = permittivity of free space)

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  4. Question 4

    Oscillations. This type asked 5 times: May 2021 S1, 15 May 2023 S1, 16 May 2023 S2, 19 Apr 2026 S2, 14 May 2026 S1. This one: 14 May 2026 S1 See all 5 of this type

    120
    The path length of oscillation of simple pendulum of 11 m is 88 cm. Its maximum velocity is (Take g=π2 m/s2g = \pi^2\ \mathrm{m/s^2})

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  5. Question 5

    Semiconductor Devices. This type asked 5 times: 19 Apr 2025 S1, 23 Apr 2025 S1, 11 Apr 2026 S2, 13 Apr 2026 S1, 14 May 2026 S1. This one: 14 May 2026 S1 See all 5 of this type

    150
    For a transistor, the current ratio αDC=6970\alpha_{DC} = \dfrac{69}{70}. The current gain βDC\beta_{DC} is

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