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Day 31: MHT-CET Physics

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

  1. Question 1

    Superposition of Waves. Asked 5 times: 3 May 2023 S1*, 10 May 2024 S1*, 23 Apr 2025 S1*, 15 Apr 2026 S2, 19 May 2026 S2 (* = numbers or wording changed that year) See all 5 times it was asked

    123
    A pipe open at both ends has a frequency ff in air. The pipe is dipped vertically in water, so that its (1/3)(1/3) part of its length is in water. The fundamental frequency of the air column is now xfxf, the value of xx is

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  2. Question 2

    Mechanical Properties of Fluids. Asked 5 times: 16 May 2023 S2, 21 Apr 2025 S2*, 11 Apr 2026 S2*, 14 May 2026 S2*, 15 May 2026 S1 (* = numbers or wording changed that year) See all 5 times it was asked

    110
    A water drop is divided into 8 equal droplets. The pressure difference between the inner and outer side of the big drop will be

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  3. Question 3

    Thermodynamics. Asked 5 times: 4 May 2023 S1*, 9 May 2023 S1*, 9 May 2023 S2*, 22 Apr 2025 S2*, 14 May 2026 S2 (* = numbers or wording changed that year) See all 5 times it was asked

    114
    If the ratio of molar heat capacities CpCv=γ\dfrac{C_p}{C_v} = \gamma then the ratio of ΔQΔU\dfrac{\Delta Q}{\Delta U} and ΔQΔW\dfrac{\Delta Q}{\Delta W} in an isobaric process is

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  4. Question 4

    Superposition of Waves. Asked 5 times: 16 May 2023 S2*, 10 May 2024 S2*, 21 Apr 2025 S1, 11 Apr 2026 S2, 14 May 2026 S1 (* = numbers or wording changed that year) See all 5 times it was asked

    122
    Two uniform strings A and B made of steel are vibrating under the same tension. If the first overtone of A is equal to the second overtone of B and if the radius of A is twice that of B, the ratio of the lengths of the strings is

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  5. Question 5

    Magnetic Fields Due to Electric Current. Asked 5 times: 10 May 2023 S1*, 16 May 2023 S2, 11 May 2024 S2*, 20 Apr 2026 S2*, 13 May 2026 S1 (* = numbers or wording changed that year) See all 5 times it was asked

    132
    An arc of a circle of radius R subtends an angle π/2\pi/2 at the centre. It carries a current I. The magnetic field at the centre will be (μ0\mu_0 = permeability of free space)

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