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Q 1/10
Score 0
Which statements support the conclusion that electrons behave as waves?
I. Diffraction is a property of waves.
II. The pattern shows alternating bright and dark regions.
III. The electrons are negatively charged.
45
A. I and II only
D. I, II, and III
B. II and III only
C. I and III only
Q 2/10
Score 0
When the accelerating voltage increases, the diffraction spacing decreases. Which statements explain this?
I. Increasing voltage increases electron momentum.
II. Greater momentum means shorter wavelength.
III. Shorter wavelength reduces diffraction spacing.
45
D. I, II, and III
A. I and II only
C. I and III only
B. II and III only
10 questions
Q.
Which statements support the conclusion that electrons behave as waves?
I. Diffraction is a property of waves.
II. The pattern shows alternating bright and dark regions.
III. The electrons are negatively charged.
1
45 sec
Q.
When the accelerating voltage increases, the diffraction spacing decreases. Which statements explain this?
I. Increasing voltage increases electron momentum.
II. Greater momentum means shorter wavelength.
III. Shorter wavelength reduces diffraction spacing.
2
45 sec
Q.
Which statements explain why the interference pattern appears?
I. Each electron has an associated wavelength.
II. Waves passing through two slits interfere.
III. Electrons collide with each other before reaching the screen.
3
45 sec
Q.
If one slit is closed, which statements are correct?
I. The interference pattern disappears.
II. Diffraction from a single slit may still occur.
III. The electron wavelength becomes zero.
4
45 sec
Q.
A student argues that electrons are purely particles because they form dots on the screen. Which statements respond scientifically?
I. Particle detection does not eliminate wave behavior.
II. The buildup of interference pattern supports wave nature.
III. Dots prove electrons cannot diffract.
5
45 sec
Q.
Which statements correctly interpret this relationship?
I. Wavelength is inversely proportional to momentum.
II. Faster electrons have shorter wavelengths.
III. Larger wavelength increases diffraction effects.
6
45 sec
Q.
Which statements explain why diffraction effects are harder to observe for very high-energy electrons?
I. High energy means high momentum.
II. High momentum produces shorter wavelength.
III. Very short wavelengths reduce observable diffraction.
7
45 sec
Q.
Why are electrons suitable for studying crystal structures?
I. Their wavelength is comparable to atomic distances.
II. Diffraction patterns reveal lattice spacing.
III. Electrons chemically react with atoms to show spacing.
8
45 sec
Q.
Which statements best summarize evidence from diffraction and double-slit experiments?
I. Electrons exhibit interference patterns.
II. Interference is a wave phenomenon.
III. Electrons possess both particle and wave characteristics.
9
45 sec
Q.
If electrons behaved only as classical particles, which statements would likely be true?
I. No interference pattern would form.
II. Diffraction peaks would not appear.
III. λ = h/p would not describe electron behavior.
