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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] medium exam-ready
An alpha particle projected towards the east is deflected towards the south by a magnetic field. The direction of the magnetic field is: (A) Upward (B) Downward (C) Towards the north (D) Towards the west
  1. A Upward
  2. B Downward
  3. C Towards the north
  4. D Towards the west
Generated by claude-sonnet-4-6 · 2026-06-26 01:09 · grounding rag
Model Answer

(A) Upward

Using Fleming's Left-Hand Rule: velocity (east), force/deflection (south) → the magnetic field points upward (out of the ground).

Explanation

Apply Fleming's Left-Hand Rule: the middle finger points in the direction of current/velocity (east), the index finger in the direction of the magnetic field, and the thumb gives the force direction (south). Arranging these, the index finger (field) must point upward. Note: an alpha particle is positively charged, so its direction of motion = direction of conventional current.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.