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Day 142: JEE Mains Physics

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

  1. Question 1

    Gravitation. Asked once: 24 Jan 2025 (same type asked 14 times) See all 14 of this type

    14
    A satellite is launched into a circular orbit of radius ' R ' around the earth. A second statellite is launched into an orbit of radius 1.03 R . The time period of revolution of the second satellite is larger than the first one approximately by :-

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  2. Question 2

    Electrostatics. Asked once: 22 Jan 2026 S2 (same type asked 12 times) See all 12 of this type

    23
    A capacitor PP with capacitance 10×10−6 F10 \times 10^{- 6}\text{ }F is fully charged with a potential difference of 6.0 V and disconnected from the battery. The charged capacitor PP is connected across another capacitor QQ with capacitance 20×10−6 F20 \times 10^{- 6}\text{ }F. The charge on capacitor QQ when equilibrium is established will be α×10−5C\alpha \times 10^{- 5}C (assume capacitor QQ does not have any charge initially), the value of α\alpha is ____\_\_\_\_.

  3. Question 3

    Ray Optics. Asked once: 5 Apr 2026 S1 (same type asked 12 times) See all 12 of this type

    15
    A ray of light passing through an equilateral prism is having velocity 2.12×108 m/s2.12 \times10^{8}\text{ }m/s in the prism material, then the minimum angle of deviation is ____\_\_\_\_ degrees.

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  4. Question 4

    Electromagnetic Waves. Asked once: 23 Jan 2025 (same type asked 11 times) See all 11 of this type

    92
    A plane electromagnetic wave of frequency 20 MHz travels in free space along the +x direction. At a particular point in space and time, the electric field vector of the wave is Ey=9.3 Vm−1E_{y}= 9.3\ Vm^{-1}. Then, the magnetic field vector of the wave at that point is-

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  5. Question 5

    Thermodynamics. Asked once: 24 Jan 2025 (same type asked 11 times) See all 11 of this type

    25
    The temperature of 1 mole of an ideal monoatomic gas is increased by 50∘C50^{\circ}C at constant pressure. The total heat added and change in internal energy are E1E_{1} and E2E_{2}, respectively. If E1E2=x9\frac{E_{1}}{E_{2}}=\frac{x}{9} then the value of xx is____