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If we apply potential difference so that...

If we apply potential difference so that an electron is accelerated continuously in a vaccum tube such that a decrease of 10% occurs in its de-Broglie wavelength. In such a case the change observed in kinetic energy of electron will be approximately-

A

a decrease of 11%

B

an increase of 11.1%

C

an increase of 10%

D

an increase of 23.4%

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The correct Answer is:
D
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