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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : If o…

Q1

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : If oxygen ion \(\left({\mathrm{O}}^{-2}\right)\) and Hydrogen ion \(\left({\mathrm{H}}^{+}\right)\)enter normal to the magnetic field with equal momentum, then the path of \({\mathrm{O}}^{-2}\) ion has a smaller curvature than that of \({\mathrm{H}}^{+}\).
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 statement, choose the correct answer from the options given below

[JEE Main 2025, 3 Apr (Shift 2)]

a

A is true but R is false

b

Both A and R are true but R is NOT the correct explanation of A

c

A is false but R is true

d

Both A and R are true and R is the correct explanation of A

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