MCQ
What accelerating potential must be imparted to a proton beam to give it an effective $\lambda = 0.05 \,\mathop A\limits^o .$
$(V=33\, volt)$ $(m_p = 1.672 \times 10^{-27} \,kg)$
- A$4.95 \times 10^6 \, V$
- B$4.95 \times 10^5 \, V$
- C$2.475 \times 10^6 \, V$
- ✓$2.475 \times 10^5 \, V$
