Class 12PhysicsDual Nature of Radiation and MatterEinstein's Photoelectric Equation and Energy Quantum of Radiation
MediumAn electron moving with velocity $1.6 \times 10^7 \ m/s$ has a wavelength of $0.4 \ \mathring{A}$. The required accelerating voltage for the electron motion is (charge on electron $= 1.6 \times 10^{-19} \ C$,mass of electron $= 9 \times 10^{-31} \ kg$).
- A$7.2 \times 10^3 \ V$
- B$7.2 \times 10^2 \ V$
- C$7.2 \ \text{V}$
- D$7.2 \times 10^{-2} \ V$
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