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Day 222: JEE Mains Physics

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

  1. Question 1

    Laws of Motion. Asked once: 5 Apr 2024 (same type asked 2 times) See all 2 of this type

    24
    Three blocks M1,M2,M3M_{1},M_{2},M_{3} having masses 4 kg,6 kg4\text{ }kg,6\text{ }kg and 10 kg10\text{ }kg respectively are hanging from a smooth pulley using rope 1,2 and 3 as shown in figure. The tension in the rope 1, T11,{\text{ }T}_{1} when they are moving upward with acceleration of 2 ms−22{\text{ }ms}^{- 2} is _____ NN (if g=10 m/s2g = 10\text{ }m/s^{2} )

  2. Question 2

    Thermodynamics. Asked once: 22 Jan 2025 (same type asked 2 times) See all 2 of this type

    94
    Given are statements for certain thermodynamic variables, (A) Internal energy, volume (V) and mass (M) are extensive variables. (B) Pressure (P), temperature (T) and density ( ρ\rho ) are intensive variables. (C) Volume (V), temperature (T) and density ( ρ\rho ) are intensive variables. (D) Mass (M), temperature (T) and internal energy are extensive variables. Choose the correct answer from the points given below :

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  3. Question 3

    Units and Measurements. Asked once: 27 Jun 2022 (same type asked 2 times) See all 2 of this type

    104
    If L,CL,C and RR are the self inductance, capacitance and resistance respectively, which of the following does not have the dimension of time?

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  4. Question 4

    Electrostatics. Asked once: 6 Apr 2023 (same type asked 2 times) See all 2 of this type

    103
    A dipole comprises of two charged particles of identical magnitude qq and opposite in nature. The mass ' mm ' of the positive charged particle is half of the mass of the negative charged particle. The two charges are separated by a distance ' ll '. If the dipole is placed in a uniform electric field ' E→\overrightarrow{E} '; such a way that dipole axis makes a very small angle with the electric field, ' E→\overrightarrow{E} '. The angular frequency of the oscillations of the dipole when released is given by:

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  5. Question 5

    Mechanical Properties of Solids. Asked once: 1 Feb 2024 (same type asked 2 times) See all 2 of this type

    114
    One end of a metal wire is fixed to a ceiling and a load of 2 kg2\text{ }kg hangs from the other end. A similar wire is attached to the bottom of the load and another load of 1 kg1\text{ }kg hangs from this lower wire. Then the ratio of longitudinal strain of upper wire to that of the lower wire will be ______ . [Area of cross section of wire =0.005 cm2= 0.005{\text{ }cm}^{2}, Y=2×1011Nm−2Y = 2 \times10^{11}Nm^{- 2} and  g=10 ms−2]\left. \ g = 10{\text{ }ms}^{- 2} \right\rbrack