JEE Mains 2020 Model Paper 2 New Pattern

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Question : 28 of 75

Marks: +1, -0

The additional energy that should be given to an electron to reduce its de-Broglie wavelength from 1 nm to 0.5 nm is

2 times the initial kinetic energy
3 times the initial kinetic energy
0.5 times the initial kinetic energy
4 times the initial kinetic energy

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