What is the de-Broglie wavelength associated with an electron moving with a speed of 6.4 \times 10^6 {\m} \/ {\s} ? [Mass of electron {\m}_{ {\e}}=9.11 \times 10^{-31} {\kg}, Planck's constant {\h}=6.63 \times 10^{-34} {\J} . {\s}.]

GUJCET 2022 Physics Solved Paper

Question : 39 of 40

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What is the de-Broglie wavelength associated with an electron moving with a speed of 6.4×106m∕s ?
[Mass of electron me=9.11×10−31‌kg, Planck's constant h=6.63×10−34J.s.]

0.124‌nm
0.114‌nm
0.135‌nm
0.145‌nm

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