Two large parallel plates are connected with the terminal of100 
power supply. These plates have a fine hole at the centre. An electron having energy 200 
is so directed that it passes through the holes. When it comes out its de ‐ Broglie wavelength is
A
1.22 
B
1.75 
C
2 
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
A
Energy of the electron, when it comes out from the second plate 
Hence accelerating potential difference 
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