Question:
A narrow beam of protons and deuterons, each having the same momentum, enters a region of uniform magnetic field directed perpendicular to their direction of momentum. The ratio of the radii of the circular paths described by them is:
A narrow beam of protons and deuterons, each having the same momentum, enters a region of uniform magnetic field directed perpendicular to their direction of momentum. The ratio of the radii of the circular paths described by them is:
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In magnetic field motion, radius depends on momentum, not mass separately.
Updated On: Mar 24, 2026
- \(1:2\)
- \(1:1\)
- \(2:1\)
- \(1:3\)
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The Correct Option is B
Solution and Explanation
Step 1: Radius of circular path in magnetic field: \[ r = \frac{p}{qB} \]
Step 2: Protons and deuterons have same momentum and same charge.
Step 3: Hence, their radii are equal.
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