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Day 288: MHT-CET Physics

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

  1. Question 1

    Units and Measurement. Asked once: 18 Apr 2026 S1 (same type asked 4 times) See all 4 of this type

    102
    If two resistors of resistances have values R1=(350±3) ΩR_1 = (350 \pm 3)\,\Omega and R2=(140±4) ΩR_2 = (140 \pm 4)\,\Omega. The percentage error for the sum and difference of R1R_1 and R2R_2 are respectively

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  2. Question 2

    Rotational Dynamics. Asked once: 15 Apr 2026 S1 (same type asked 4 times) See all 4 of this type

    107
    If the earth suddenly contracts to (13)rd\left(\dfrac{1}{3}\right)^{rd} of its present size without change in its mass, the ratio kinetic energy of the earth after and before contraction will be (Earth is assumed to be a rotating sphere about itself)

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  3. Question 3

    Semiconductor Devices. Asked once: May 2021 S1 (same type asked 4 times) See all 4 of this type

    31
    For a common-emitter amplifier, the voltage gain is 40. Its input and output impedances are 100 Ω100\ \Omega and 400 Ω400\ \Omega, respectively. The power gain of the CE amplifier will be

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  4. Question 4

    Superposition of Waves. Asked once: 9 May 2024 S2 (same type asked 4 times) See all 4 of this type

    37
    If the end correction of an open pipe is 0.8 cm, then the inner radius of that pipe is

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  5. Question 5

    Wave Optics. Asked once: 13 May 2024 S2 (same type asked 4 times) See all 4 of this type

    15
    The path difference between two identical light waves at a point Q on the screen is 3 μm [the paper leaves the number out; 3 μm is the value its answer requires]. If the wavelength of the waves is 5000 Å, then at point Q there is

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