MCQ
Which of the following statements about the electron is incorrect?
- AIt is a negatively charged particle.
- ✓The mass of electron is equal to the mass of neutron.
- CIt is a basic constituent of all atoms.
- DIt is a constituent of cathode rays.
✓
Answer
Correct option: B.
The mass of electron is equal to the mass of neutron.
The mass of electron is very small as compared to the mass of the neutron.
Mass of electron $= 9.1 \times 10^{-31} \ kg$ Mass of neutron $= 1.674 \times 10^{-27}kg.$
Mass of electron $= 9.1 \times 10^{-31} \ kg$ Mass of neutron $= 1.674 \times 10^{-27}kg.$
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