RRB Technician (Grade I Signal + Grade III) 2024 · Question 80 of 1214

Calculate the maximum velocity of the beam of electrons in a CRT having a cathode anode voltage of 182 V . Assume that the electrons to leave the cathode with zero velocity. (Charge of electron $=1.6 \times 10^{-19} \mathrm{C}$ and mass of electron $=9.1 \times 10^{-31} \mathrm{~kg}$ )

best-effort

1. A$4 \times 10^{6} \mathrm{~m} / \mathrm{s}$
2. B$8 \times 10^{6} \mathrm{~m} / \mathrm{s}$Correct
3. C$2 \times 10^{6} \mathrm{~m} / \mathrm{s}$
4. D$1 \times 10^{5} \mathrm{~m} / \mathrm{s}$