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Day 148: JEE Mains Physics

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

  1. Question 1

    Wave Optics. Asked once: 3 Apr 2025 (same type asked 8 times) See all 8 of this type

    23
    Two coherent monochromatic light beams of intensities 4I and 9I are superimposed. The difference between the maximum and minimum intensities in the resulting interference pattern is xI . The value of xx is ____\_\_\_\_.

  2. Question 2

    Moving Charges and Magnetism. Asked once: 5 Apr 2024 (same type asked 8 times) See all 8 of this type

    111
    A solenoid of length 0.5 m0.5\text{ }m has a radius of 1 cm1\text{ }cm and is made up of ' mm ' number of turns. It carries a current of 5 A5\text{ }A. If the magnitude of the magnetic field inside the solenoid is 6.28×10−3 T6.28 \times10^{- 3}\text{ }T, then the value of mm is:

  3. Question 3

    Mechanical Properties of Fluids. Asked once: 24 Jan 2026 S1 (same type asked 7 times) See all 7 of this type

    25
    Sixty four rain drops of radius 1 mm each falling down with a terminal velocity of 10 cm/s10\text{ }cm/s coalesce to form a bigger drop. The terminal velocity of bigger drop is ____\_\_\_\_ cm/scm/s.

  4. Question 4

    Motion in a Plane. Asked once: 7 Apr 2025 (same type asked 7 times) See all 7 of this type

    12
    Two projectiles are fired from ground with same initial speeds from same point at angles (45∘+α)\left( 45^{\circ}+\alpha \right) and (45∘−α)\left( 45^{\circ}-\alpha \right) with horizontal direction. The ratio of their times of flights is.

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  5. Question 5

    Thermodynamics. Asked once: 2 Apr 2026 S1 (same type asked 7 times) See all 7 of this type

    22
    A vessel contains 0.15 m30.15{\text{ }m}^{3} of a gas at pressure 8 bar and temperature 140∘C140^{\circ}C with cp=3Rc_{p} = 3R and cv=2Rc_{v} = 2R. It is expanded adiabatically till pressure falls to 1 bar. The work done during this process is ____\_\_\_\_ k J . (R is gas constant)