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Assertion is true reason is false
Given below are two statements: one is labelled as Assertion A and the other is labelled asReason R. Assertion A:. If oxygen ion ( O^-2 ) and…
JEE Main 2025 — Physics Electromagnetism
2025mcqeasy
Given below are two statements: one is labelled as Assertion A and the other is labelled asReason R.
Assertion A:. If oxygen ion (O−2) and Hydrogen ion (H+)enter normal to the magnetic field with equal momentum, then the path of O−2 ion has a smaller curvature than that of 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 statements, choose the correct answer from the options given below :
Official previous-year question
Held on 3 Apr 2025 · Verified 6 Jul 2026.
Options
- 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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