What is the de-Broglie wavelength associated with an electron moving at a speed of $$5.4\times10^6~\text{m/s}$$?
1. $$0.244~\text{nm}$$
2. $$0.135~\text{nm}$$
3. $$0.157~\text{nm}$$
4. $$0.111~\text{nm}$$

Subtopic:  De-broglie Wavelength |
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The de-Broglie wavelength associated with a ball of mass $$150~\text{g}$$ travelling at a speed of $$30.0~\text{m/s}$$ is:
1. $$1.47\times10^{-32}~\text{m}$$

2. $$2.01\times10^{-34}~\text{m}$$
3. $$2.01\times10^{-32}~\text{m}$$
4. $$1.47\times10^{-34}~\text{m}$$


Subtopic:  De-broglie Wavelength |
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An electron, an α-particle, and a proton have the same kinetic energy. Which of these particles has the shortest de Broglie wavelength?

1. Electron

2. $\alpha$-particle

3. proton

4. All have the same de Broglie wavelength

Subtopic:  De-broglie Wavelength |
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A particle is moving three times as fast as an electron. The ratio of the de Broglie wavelength of the particle to that of the electron is $1.813×{10}^{-4}$. The particle’s mass is:

Subtopic:  De-broglie Wavelength |
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What is the de Broglie wavelength associated with an electron, accelerated through a potential difference of $$100$$ V?
1. $$0.123$$ nm
2. $$0.232$$ nm
3. $$0.031$$ nm
4. $$0.312$$ nm

Subtopic:  De-broglie Wavelength |
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