PYQ Vault

Day 396: JEE Mains Physics

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

  1. Question 1

    Thermodynamics. Asked once: 28 Jun 2022 (same type asked 4 times) See all 4 of this type

    7
    Given below are two statement: Statement - I : When μ\mu amount of an ideal gas undergoes adiabatic change from state (P1, V1, T1)\left( P_{1},{\text{ }V}_{1},{\text{ }T}_{1} \right) to state (P2, V2, T2)\left( P_{2},{\text{ }V}_{2},{\text{ }T}_{2} \right), the work done is  W=μR(T2−T1)1−γ\ W =\frac{\mu R\left( T_{2}-T_{1} \right)}{1 - \gamma}, where γ=CPCV\gamma =\frac{C_{P}}{C_{V}} and R=R = universal gas constant, Statement - II: In the above case. when work is done on the gas. the temperature of the gas would rise. Choose the correct answer from the options given below:

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  2. Question 2

    Units and Measurements. Asked once: 14 Jun 2022 (same type asked 4 times) See all 4 of this type

    91
    Identify the pair of physical quantities that have same dimensions:

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  3. Question 3

    Units and Measurements. Asked once: 26 Jun 2022 (same type asked 4 times) See all 4 of this type

    91
    The dimension of mutual inductance is :

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  4. Question 4

    Current Electricity. Asked once: 2021 Paper 16 (same type asked 4 times) See all 4 of this type

    2
    A capacitor of capacitance 100μF100\mu F discharges through a resistor R. At the same time a radioactive substance decays with mean life 30 ms30\text{ }ms. If ratio of charge on capacitor to activity of substance does not change with time, then find RR.

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  5. Question 5

    Units and Measurements. Asked once: 3 Apr 2025 (same type asked 20 times) See all 20 of this type

    9
    Match the LIST-I with LIST-II
    LIST-ILIST-II
    A. Gravitational constantI. [LT−2]\left[LT^{-2}\right]
    B. Gravitational potential energyII. [L2T−2]\left[L^{2}T^{-2}\right]
    C. Gravitational potentialIII. [ML2T−2]\left[ML^{2}T^{-2}\right]
    D. Acceleration due to gravityIV. [M−1L3T−2]\left[M^{-1}L^{3}T^{-2}\right]
    Choose the correct answer from the options given below:

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