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Day 128: MHT-CET Physics

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

  1. Question 1

    Oscillations. Asked 2 times: 4 May 2023 S1, 18 Apr 2026 S2 See all 2 times it was asked

    119
    Two particles A and B of equal masses are suspended from two massless springs of spring constants KAK_A and KBK_B respectively. The maximum velocities of the particles during oscillations are equal. The ratio of the amplitude of 'B' to that of 'A' is

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  2. Question 2

    Semiconductor Devices. Asked 2 times: 14 May 2024 S2, 18 Apr 2026 S2 See all 2 times it was asked

    148
    In an NPN transistor, the collector current is 28 mA. If 80% electrons reach the collector, its base current in mA is

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  3. Question 3

    Wave Optics. Asked 2 times: 2 May 2023 S2*, 18 Apr 2026 S2 (* = numbers or wording changed that year) See all 2 times it was asked

    143
    In an optical instrument- microscope, the wavelength of light used are λ1=6800 A˚\lambda_1 = 6800\ \mathrm{\mathring{A}} and λ2=5100 A˚\lambda_2 = 5100\ \mathrm{\mathring{A}}. The ratio of the resolving power of microscope corresponding to 'λ1\lambda_1' to that for 'λ2\lambda_2' is

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  4. Question 4

    Sound. Asked 2 times: 22 Apr 2025 S1*, 18 Apr 2026 S2 (* = numbers or wording changed that year) See all 2 times it was asked

    124
    A person standing between two parallel cliffs fires a gun and hears two echoes, first echo after 1 second and second echo after 3 second. The distance between the two cliffs is (The velocity of sound =330= 330 m/s)

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  5. Question 5

    AC Circuits. Asked 2 times: 25 Apr 2025 S2, 18 Apr 2026 S1 See all 2 times it was asked

    139
    In an a.c. circuit, a resistance R is connected in series with an inductance 'L'. If phase angle between voltage and current is 45∘45^\circ, the value of inductive reactance will be (sin⁡45∘=12=cos⁡45∘)\left(\sin 45^\circ = \dfrac{1}{\sqrt{2}} = \cos 45^\circ\right)

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