Verified Solution • 2025–26 Session moderate

QNEET-2020-Ph-720: NEET 2020 Physics - Class 12 NEET-2020-Ph-720 Solution: An electron is accelerated from rest through a potential…

An electron is accelerated from rest through a potential difference of V volt. If the de-Broglie wavelength of the electron is 1.227×10−2 nm1.227 \times 10^{-2}\ \text{nm} the potential difference is: 102 V10^2\ \text{V} 103 V10^3\ \text{V} 104 V10^4\ \text{V} 10 V10\ \text{V}

Multiple Choice Options

  • A 10 2 V
  • B 10 3 V
  • C 10 4 V
  • D 10 V

Step-by-Step Verified Solution

The de-Broglie wavelength and the accelerated potential is related as follows : _ = 12.27 V A _ V = 12.27 _ 10 _ 10 1.227 _ 10 _ 11 = 10 2 V = 10 4 volts

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