Order of e/m ratio of proton, α-particle and electron is

⇦

⇨

Order of e/m ratio of proton, α-particle and electron is

Options

(a) e>p>α
(b) p>α>e
(c) e>α>p
(d) None of these

Correct Answer:

e>p>α

Explanation:

For electron (e / mₑ) = 1.6 × 10⁻¹⁹ / 9 × 10⁻³¹ = 1.75 × 10¹¹ C kg⁻¹

For proton [e / m(p)] = 1.6 × 10⁻¹⁹ / 1.67 × 10⁻²⁷ = 9.58 × 10⁷ C kg⁻¹

For α-particle [e / m(α)] = 2 × 1.6 × 10⁻¹⁹ / 6.6 × 10⁻²⁷ = 4.84 × 10⁷ C kg⁻¹

Hence the ratio (e/m) for e > p > α

Related Questions:

1. In the given (V – T) diagram, what is the relation between pressure P₁ and P₂?
2. The identical loops of copper and aluminium are moving with the same speed
3. A man of 50 kg mass is standing in a gravity free space at a height
4. Rate of photoelectric emission is proportional to
5. A ball rolls without slipping. The raidus of gyration of the ball about an axis

Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends