JEE Main 2018 (Online) 15th April Evening Slot | Center of Mass and Collision Question 113 | Physics

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 :

$${m \over 2}$$

$${m \over {\sqrt 3 }}$$

2 m

JEE Main 2017 (Online) 9th April Morning Slot

MCQ (Single Correct Answer)

-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 :

JEE Main 2017 (Online) 9th April Morning Slot Physics - Center of Mass and Collision Question 113 English

JEE Main 2017 (Online) 9th April Morning Slot Physics - Center of Mass and Collision Question 113 English

tan $$\theta $$ = $${{\sqrt 3 + \sqrt 2 } \over {1 - \sqrt 2 }}$$

tan $$\theta $$ = $${{\sqrt 3 - \sqrt 2 } \over {1 - \sqrt 2 }}$$

tan $$\theta $$ = $${{1 - \sqrt 2 } \over {\sqrt 2 \left( {1 + \sqrt 3 } \right)}}$$

tan $$\theta $$ = $${{1 - \sqrt 3 } \over {1 + \sqrt 2 }}$$

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

-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 :

10.2 eV

16.8 eV

12.1 eV

20.4 eV

JEE Main 2016 (Online) 10th April Morning Slot

MCQ (Single Correct Answer)

-1

In the figure shown ABC is a uniform wire. If centre of mass of wire lies vertically below point A, then $${{BC} \over {AB}}$$ is close to :

JEE Main 2016 (Online) 10th April Morning Slot Physics - Center of Mass and Collision Question 111 English