1) Arrange the following particles in increasing order of values of e/m ratio : electron (e), proton (p), neutron (n) and α-particle (α) - A) n, p, e, α B) n, α, p, e C) n, p, α, e D) e, p, n, α Answer: Option BExplanation: Electron Proton Neutron α-Particle e 1 Unit 1 Unit Zero 2 Units m 1/1837 Unit 1 Unit 1 Unit 4-Units e/m 1837 1 Zero 1/2
