PYQ Vault
EbooksTutor

Day 300: JEE Mains Physics

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

  1. Question 1

    Moving Charges and Magnetism. Asked once: 6 Apr 2023 (same type asked 3 times) See all 3 of this type

    120
    A proton with a kinetic energy of 2.0eV2.0eV moves into a region of uniform magnetic field of magnitude π2×10−3 T\frac{\pi}{2}\times10^{- 3}\text{ }T. The angle between the direction of magnetic field and velocity of proton is 60∘60^{\circ}. The pitch of the helical path taken by the proton is___ cmcm. (Take, mass of proton =1.6×10−27 kg= 1.6 \times10^{- 27}\text{ }kg and Charge on proton =1.6×10−19C= 1.6 \times10^{- 19}C ).

  2. Question 2

    Moving Charges and Magnetism. Asked once: 2021 Paper 19 (same type asked 3 times) See all 3 of this type

    27
    A coil in the shape of an equilateral triangle of side 10 cm10\text{ }cm lies in a vertical plane between the pole pieces of permanent magnet producing a horizontal magnetic field 20mT20mT. The torque acting on the coil when a current of 0.2 A0.2\text{ }A is passed through it and its plane becomes parallel to the magnetic field will be x×10−5Nm\sqrt{x}\times10^{- 5}Nm. The value of xx is

  3. Question 3

    Oscillations. Asked once: 2021 Paper 25 (same type asked 3 times) See all 3 of this type

    19
    If two similar springs each of spring constant K1K_{1} are joined in series, the new spring constant and time period would be changed by a factor:

    Tap an option to check your answer.

  4. Question 4

    Thermodynamics. Asked once: 6 Apr 2024 (same type asked 3 times) See all 3 of this type

    92
    A total of 48 J48\text{ }J heat is given to one mole of helium kept in a cylinder. The temperature of helium increases by 2∘C2^{\circ}C. The work done by the gas is: (Given, R=8.3 J K−1 mol−1R = 8.3\text{ }J{\text{ }K}^{- 1}{\text{ }mol}^{- 1}.)

    Tap an option to check your answer.

  5. Question 5

    Electromagnetic Induction. Asked once: 10 Apr 2023 (same type asked 3 times) See all 3 of this type

    111
    A square loop of side 2.0 cm2.0\text{ }cm is placed inside a long solenoid that has 50 turns per centimetre and carries a sinusoidally varying current of amplitude 2.5 A2.5\text{ }A and angular frequency 700rads−1700rads^{- 1}. The central axes of the loop and solenoid coincide. The amplitude of the emf induced in the loop is x×10−4 Vx \times10^{- 4}\text{ }V. The value of xx is___ (Take, π=227\pi =\frac{22}{7} )