PYQ Vault

Day 250: JEE Mains Physics

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

  1. Question 1

    Thermodynamics. Asked once: 2021 Paper 26 (same type asked 2 times) See all 2 of this type

    22
    1 mole of rigid diatomic gas performs a work of Q5\frac{Q}{5} when heat QQ is supplied to it. The molar heat capacity of the gas during this transformation is xR8\frac{xR}{8}. The value of xx is
  2. Question 2

    Motion in a Straight Line. Asked once: 2021 Paper 7 (same type asked 2 times) See all 2 of this type

    10
    A car accelerates from rest at a constant rate α\alpha for some time after which it decelerates at a constant rate β\beta to come to rest. If the total time elapsed is tt seconds, the total distance travelled is:

    Tap an option to check your answer.

  3. Question 3

    Dual Nature of Radiation and Matter. Asked once: 2021 Paper 10 (same type asked 2 times) See all 2 of this type

    20
    The speed of electrons in a scanning electron microscope is of the order of 107 ms−110^{7}\ ms^{-1}. If protons having the same speed are used instead of electrons, then the resolving power of the scanning proton microscope will be changed by a factor of:

    Tap an option to check your answer.

  4. Question 4

    Gravitation. Asked once: 2021 Paper 16 (same type asked 2 times) See all 2 of this type

    17
    Two planets AA and BB of masses MM and 9M9M with radii RR and 2R2R respectively are present 8 RR distance away from each other. Minimum velocity with which a particle is projected from surface of A such that it reaches planet B is given by aGM7R\sqrt{\frac{aGM}{7R}}. Value of ' aa ' is
  5. Question 5

    Motion in a Straight Line. Asked once: 2021 Paper 8 (same type asked 2 times) See all 2 of this type

    9
    The velocity of a particle is v=v0+gt+Ft2v =v_{0}+ gt +Ft^{2}. Its position is x=0x = 0 at t=0t = 0; then its displacement after time (t=1)(t= 1) is:

    Tap an option to check your answer.