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

admin:

Related Questions

  1. An electron revolves in a circle at the rate of 10¹⁹ rounds per second.
  2. Two resistances 3Ω and 6Ω are connected in parallel
  3. Two straight wires each 10cm long are parallel to one another and seperated by 2 cm.
  4. In the diagram shown in figure, match the following about weight
  5. If the band gap between valence band and conduction band in a material is 5.0 eV,