1

JEE Main 2018 (Offline)

MCQ (Single Correct Answer)

+4

-1

The mass of a hydrogen molecule is 3.32 $$\times$$ 10

^{-27}kg. If 10^{23}hydrogen molecules strike, per second, a fixed wall of area 2 cm^{2}at an angle of 45^{o}to the normal, and rebound elastically with a speed of 10^{3}m/s, then the pressure on the wall is nearly:2

JEE Main 2018 (Online) 15th April Evening Slot

MCQ (Single Correct Answer)

+4

-1

A proton of mass m collides elastically with a particle of unknown mass at rest. After the collision, the proton and the unknown particle are seen moving at an angle of 90

^{o}with respect to each other. The mass of unknown particle is :3

JEE Main 2017 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

Two particles A and B of equal mass M are moving with the same speed $$\upsilon $$ as shown in the figure. They collide completely inelastically and move as a single particle C. The angle $$\theta $$ that the path of C makes with the X-axis is given by :

4

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

+4

-1

A neutron moving with a speed ‘v’ makes a head on collision with a stationary
hydrogen atom in ground state. The minimum kinetic energy of the neutron for
which inelastic collision will take place is :

Questions Asked from Center of Mass and Collision (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

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