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Day 191: MHT-CET Physics

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

  1. Question 1

    AC Circuits. This type asked 2 times: 16 May 2023 S2, 9 May 2024 S1. This one: 9 May 2024 S1 See all 2 of this type

    9
    The coil of an a.c. generator has 100 turns, each of cross-sectional area 2 m² [the paper leaves the area blank; 2 m² is the value its answer key's working requires]. It is rotating at a constant angular speed of 30 rad/s in a uniform magnetic field of 2×10−22 \times 10^{-2} T. If the total resistance of the circuit is 600 Ω600\,\Omega, then the maximum power dissipated in the circuit is

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  2. Question 2

    Rotational Dynamics. This type asked 2 times: 16 May 2023 S1, 9 May 2024 S1. This one: 9 May 2024 S1 See all 2 of this type

    29
    A square lamina of side 'bb' has same mass as a disc of radius 'RR'. The moment of inertia of the two objects about an axis perpendicular to the plane and passing through the centre is equal. The ratio bR\frac{b}{R} is

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  3. Question 3

    Thermodynamics. This type asked 2 times: 3 May 2023 S2, 16 May 2023 S2. This one: 16 May 2023 S2 See all 2 of this type

    14
    During an experiment, an ideal gas is found to obey an additional law VP2=VP^2 = constant. The gas is initially at temperature TT and volume VV. What will be the temperature of the gas when it expands to a volume 2V2V?

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  4. Question 4

    Kinetic Theory of Gases. This type asked 2 times: May 2022 S1, 11 May 2023 S2. This one: 11 May 2023 S2 See all 2 of this type

    46
    The ratio of the velocity of sound in hydrogen gas (γ=75)\left(\gamma=\frac{7}{5}\right) to that in helium gas (γ=53)\left(\gamma=\frac{5}{3}\right) at the same temperature is

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  5. Question 5

    Superposition of Waves. This type asked 2 times: 11 May 2023 S1, 11 May 2023 S2. This one: 11 May 2023 S2 See all 2 of this type

    13
    Considering interference between two sources of intensities 'I' and '4I', the intensity at a point where the phase difference is π\pi is (cos⁡π=−1)(\cos\pi = -1)

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