Published by:
CGP EDU Academic Team
Published on: August 11, 2026
A proton of mass 
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 
with respect to each other. The mass of unknown particle is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
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