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Day 366: JEE Mains Physics

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

  1. Question 1

    Thermodynamics. Asked once: 26 Jul 2022 (same type asked 4 times) See all 4 of this type

    14
    A monoatomic gas at pressure PP and volume VV is suddenly compressed to one eighth of its original volume. The final pressure at constant entropy will be:

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  2. Question 2

    Units and Measurements. Asked once: 27 Jun 2022 (same type asked 4 times) See all 4 of this type

    91
    The SI unit of a physical quantity is pascal-second. The dimensional formula of this quantity will be

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  3. Question 3

    Alternating Current. Asked once: 25 Jul 2022 (same type asked 4 times) See all 4 of this type

    14
    The rms value of conduction current in a parallel plate capacitor is 6.9μA6.9\mu A. The capacity of this capacitor, if it is connected to 230 V230\text{ }V ac supply with an angular frequency of 600rad/s600rad/s, will be:

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  4. Question 4

    Electromagnetic Induction. Asked once: 26 Jun 2022 (same type asked 4 times) See all 4 of this type

    25
    A 10Ω,20mH10\Omega,20mH coil carrying constant current is connected to a battery of 20 V20\text{ }V through a switch. When the switch is opened, the current becomes zero in 100μs100\mu s. The average emf induced in the coil is ____\_\_\_\_ V.
  5. Question 5

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

    10
    The switch is closed at t=0t = 0. Find time after which voltage across capacitor becomes 50 volt. [take ln⁡2=0.6\ln2 = 0.6 ]

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