JEE Main 2025 Physics question
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : If Oxygen ion () and Hydrogen ion () enter normal to the magnetic field with equal momentum, then the path of ion has a smaller curvature than that of . Reason R : A proton with same linear momentum as an electron will form a path of smaller radius of curvature on entering a uniform magnetic field perpendicularly. In the light of the above statements, choose the correct answer from the options given below
Answer: (1)
Solution
; since mv, B are same, , so (A) is correct; but proton and electron radii are equal (R is incorrect)