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Day 268: MHT-CET Physics

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

  1. Question 1

    Current Electricity. Asked once: 10 May 2023 S2 (same type asked 12 times) See all 12 of this type

    48
    In an ammeter, 0.25% of main current passes through the galvanometer. If the resistance of the galvanometer is 'G', the resistance of ammeter will be

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  2. Question 2

    Wave Optics. Asked once: 13 May 2024 S2 (same type asked 11 times) See all 11 of this type

    47
    Light of wavelength 5000 Å is incident normally on a slit. The first minimum of the diffraction pattern is observed to lie at a distance of 5 mm from the central maximum on a screen placed at a distance of 2 m from the slit. The width of the slit is

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  3. Question 3

    Wave Optics. Asked once: 15 May 2026 S1 (same type asked 10 times) See all 10 of this type

    142
    In double slit experiment, the angular width of the fringes is 0.20∘0.20^\circ for sodium light (λ=5890 A˚\lambda = 5890\ \mathrm{\mathring{A}}). To increase the angular width of the fringes by 10%10\%, the necessary change in wavelength is

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  4. Question 4

    AC Circuits. Asked once: 14 May 2026 S1 (same type asked 10 times) See all 10 of this type

    139
    A resistance of 20 Ω20\,\Omega is connected to a source of alternating potential V=220sin⁡(100πt)V = 220\sin(100\pi t). The time taken by current to change from its peak value to r.m.s. value is (sin⁡π4=12)\left(\sin\dfrac{\pi}{4} = \dfrac{1}{\sqrt{2}}\right)

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  5. Question 5

    AC Circuits. Asked once: 16 May 2023 S2 (same type asked 10 times) See all 10 of this type

    11
    An inductance of 2 mH, a condenser of 20 μF20\,\mu\text{F} and a resistance of 50 Ω50\,\Omega are connected in series to an a.c. source. The reactance of inductor and condenser are same. The reactance of either of them will be

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