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Day 34: JEE Mains Physics

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

  1. Question 1

    Units and Measurements. This type asked 4 times: 24 Jan 2023, 15 Apr 2023, 23 Jan 2026 S2, 8 Apr 2026 S2. This one: 8 Apr 2026 S2 See all 4 of this type

    2
    Consider the equation H=xp∈qErtsH=\frac{x^{p}\in^{q}E^{r}}{t^{s}} Where H=H = magnetic field; E=E = electric field; ϵ=\epsilon= permittivity, x=x = distance, t=t = time. The values of p,q,rp,q,r and ss respectively are :

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  2. Question 2

    Current Electricity. This type asked 4 times: 25 Jan 2023, 30 Jan 2024, 3 Apr 2025, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 4 of this type

    24
    Two cells of emfs 1 V and 2 V and internal resistance 2Ω2\Omega and 1Ω1\Omega, respectively connected in parallel, gave current of 1A through an external resistance. If the polarity of one cell is reversed, then value of current through the external resistance will be α5 A\frac{\alpha}{5}\text{ }A. The value of α\alpha is ____\_\_\_\_ .

  3. Question 3

    Work, Energy and Power. This type asked 4 times: 29 Jun 2022, 25 Jul 2022, 9 Apr 2024, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 4 of this type

    4
    A body of mass 1 kg moves along a straight line with a velocity v=2x2v= 2x^{2}. The work done by the body during displacement from x=0x = 0 to 5 m is ____\_\_\_\_ J.

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  4. Question 4

    Oscillations. This type asked 4 times: 27 Jun 2022, 25 Jan 2023, 29 Jan 2024, 6 Apr 2026 S1. This one: 6 Apr 2026 S1 See all 4 of this type

    12
    A particle is executing simple harmonic motion. Its amplitude is A and time period is 5 sec . the time required by it to move from x=Ax=A to x=A2x=\frac{A}{\sqrt{2}} is ____\_\_\_\_ sec.

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  5. Question 5

    Units and Measurements. This type asked 4 times: 27 Jun 2022, 8 Apr 2023, 22 Jan 2025, 6 Apr 2026 S1. This one: 6 Apr 2026 S1 See all 4 of this type

    1
    The density ρ\rho of a uniform cylinder is determined by measuring its mass m , length ll and diameter d . The measured values of m,lm,l and d are 97.42±0.02 g,8.35±0.05 mm97.42 \pm 0.02\text{ }g,8.35 \pm 0.05\text{ }mm and 20.20±0.02 mm20.20 \pm 0.02\text{ }mm, respectively. Calculated percentage fractional error in ρ\rho is ____\_\_\_\_.

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