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Day 434: JEE Mains Physics

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

  1. Question 1

    Motion in a Plane. Asked once: 6 Apr 2026 S1

    7
    A smooth inclined plane ends in a vertical circular loop, as shown in the figure. A small body is released from height hh as shown. If the body exerts a force of three times its weight on the plane at the highest point of circle, then the height h=αRh=\alpha R. The value of α\alpha is

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  2. Question 2

    Motion in a Straight Line. Asked once: 4 Apr 2026 S2

    2
    Two cars A and B are moving in the same direction along a straight line with speeds 100 km/h100\text{ }km/h and 80 km/h80\text{ }km/h, respectively such that car A is moving ahead of car B . A person in car B throws a stone with a speed v so that it hits the car A with a speed of 5 m/s5\text{ }m/s. The value of v is ____\_\_\_\_ km/hkm/h.

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  3. Question 3

    Moving Charges and Magnetism. Asked once: 6 Apr 2026 S1

    17
    A small cube of side 1 mm is placed at the center of a circular loop of radius 10 cm carrying a current of 2 A . The magnetic energy stored inside the cube is α×10−14 J\alpha \times10^{- 14}\text{ }J. The value of α\alpha is ____\_\_\_\_ . ( μ0=4π×10−7Tm/A,π=3.14\mu_{0}= 4\pi\times10^{- 7}Tm/A,\pi= 3.14 )

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  4. Question 4

    Nuclei. Asked once: 6 Apr 2026 S1

    23
    The energy released when 717.13 kg\frac{7}{17.13}\text{ }kg of  37Li\ _{3}^{7}Li is converted into  24He\ _{2}^{4}He by proton bombardment is α×1032eV\alpha \times 10^{32}eV. The value of α\alpha is ____\_\_\_\_ . (Nearest integer) (Mass of  37Li=7.0183u\ _{3}^{7}Li = 7.0183u, mass of  24He=4.004u\ _{2}^{4}He = 4.004u, mass of proton =1.008u= 1.008u and 1u=931MeV/c21u = 931MeV/c^{2} and Avogadro number =6.0×1023= 6.0 \times 10^{23} )

  5. Question 5

    Oscillations. Asked once: 6 Apr 2026 S2

    11
    A spring stretches by 2 mm when it is loaded with a mass of 200 g . From equilibrium position the mass is further pulled down by 2 mm and released. The frequency associated with the system and maximum energy in the spring are ____\_\_\_\_ Hz and ____\_\_\_\_ J , respectively. (Take g=10 m/s2g = 10\text{ }m/s^{2} )

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