Question 50
Radioactivity and Nuclear PhysicsA beam of radiation is passed between a pair of charged plates as indicated in the diagram above. Beam P is undeflected while Q is deflected to the left. P and Q respectively could be I. γ-rays, β-rays II. x-rays, β-rays III. γ-rays, x-rays IV. x-rays, x-rays
- A.I only
- B.III only
- C.I and II
- D.III and IV
Show the answer and explanation
Answer: C (I and II)
Explanation
P is uncharged, so it could be γ-rays or X-rays. Q bends towards the positive plate, so it is negative: β-rays. Both I and II fit.