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Day 85: MHT-CET Physics

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

  1. Question 1

    AC Circuits. Asked 3 times: 15 May 2023 S2*, 26 Apr 2025 S1*, 13 Apr 2026 S1 (* = numbers or wording changed that year) See all 3 times it was asked

    139
    A resistor of 100 Ω\Omega, inductor of self inductance (4π2)\left(\dfrac{4}{\pi^2}\right) H and a capacitor of unknown capacity are connected in series to an a.c. source of 200 V and 50 Hz. When the current and voltage are in phase, the value of capacity is

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  2. Question 2

    Motion in a Plane. Asked 3 times: 26 Apr 2025 S2, 11 Apr 2026 S2, 13 Apr 2026 S1 See all 3 times it was asked

    102
    The vector sum of the two forces A⃗\vec{A} and B⃗\vec{B} is perpendicular to their vector difference. Hence forces A⃗\vec{A} and B⃗\vec{B} are

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  3. Question 3

    Rotational Dynamics. Asked 3 times: 11 May 2024 S1*, 14 May 2024 S1*, 13 Apr 2026 S1 (* = numbers or wording changed that year) See all 3 times it was asked

    104
    A string of length 'L' fixed at one end carries a mass 'm' at the other end. The string makes 3π\dfrac{3}{\pi} r.p.s. around the vertical axis through fixed end. The tension in the string is

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  4. Question 4

    Thermodynamics. Asked 3 times: 4 May 2023 S2, 20 Apr 2025 S2, 13 Apr 2026 S1 See all 3 times it was asked

    116
    The change in internal energy of the mass of gas, when the volume changes from V to 2V at constant pressure P is (γ\gamma is the ratio of specific heat at constant pressure to that of volume) (γ=CpCv)\left(\gamma = \dfrac{C_p}{C_v}\right)

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  5. Question 5

    AC Circuits. Asked 3 times: 22 Apr 2025 S2, 26 Apr 2025 S2*, 11 Apr 2026 S2 (* = numbers or wording changed that year) See all 3 times it was asked

    136
    In an a.c. circuit containing L, C and R in series, the ratio of apparent power to the true power is (Z= impedance of the circuit and R= resistance )

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