Assertion (A): Gamma rays are fundamentally un-deflected by electric and magnetic fields. Reason (R): Gamma rays carry no electrical charge. MCQ with Answer and Explanation

Question

Assertion (A): Gamma rays are fundamentally un-deflected by electric and magnetic fields. Reason (R): Gamma rays carry no electrical charge.

A. A is true but R is false.

B. A is false but R is true.

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

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

Answer: Option D

Solution (By JKSSB Mock Tests)

Electric fields deflect charged particles via Coulomb forces (F=qE), and magnetic fields deflect moving charged particles via Lorentz forces (F=qvB). Gamma rays are purely high-energy electromagnetic photons. Because they lack any electrical charge (q=0), both electric and magnetic forces on them are exactly zero. Therefore, they pass through fields completely un-deflected. R explains A perfectly.

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