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Day 275: MHT-CET Physics

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

  1. Question 1

    Rotational Dynamics. Asked once: 21 Apr 2025 S1 (same type asked 7 times) See all 7 of this type

    44
    Three spheres, each of mass ' mm ' and radius ' rr ' are placed as shown in figure. Consider an axis YY′YY^{'}, which is touching two spheres and passing through the diameter of third sphere. The moment of inertia of the system consisting of these three spheres about YY′YY^{'} axis is

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  2. Question 2

    Superposition of Waves. Asked once: 13 May 2024 S2 (same type asked 7 times) See all 7 of this type

    45
    The equation of a progressive wave is Y=asin⁡2π ⁣(nt−x5)Y=a\sin 2\pi\!\left(nt-\frac{x}{5}\right). The ratio of maximum particle velocity to wave velocity is

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  3. Question 3

    AC Circuits. Asked once: 3 May 2023 S1 (same type asked 7 times) See all 7 of this type

    38
    An inductance coil has a resistance of 80 Ω80\ \Omega. When an AC signal of frequency 480 Hz is applied, the voltage leads the current by 45∘45^\circ. The inductance of the coil in henry is

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  4. Question 4

    Semiconductor Devices. Asked once: 12 May 2024 S1 (same type asked 7 times) See all 7 of this type

    43
    When forward bias is applied to a p-n junction, then what happens to the potential barrier VBV_{B} and the width (XX) of the depletion region?

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  5. Question 5

    AC Circuits. Asked once: 15 May 2023 S2 (same type asked 7 times) See all 7 of this type

    32
    Which one of the following graphs represents correctly the variation of impedance (Z)(Z) of a series LCR circuit with the frequency (ν)(\nu) of applied a.c.?

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