Electrons Emerge from an Electron Gun with a Speed of 2.0

question 120

Multiple Choice

Electrons emerge from an electron gun with a speed of 2.0 × 10⁶ m/s and then pass through a double-slit apparatus.Interference fringes with spacing of 2.7 mm are detected on a screen far from the double slit.What would the fringe spacing be if the electrons were replaced by neutrons with the same speed? (h = 6.626 × 10^-34 J ∙ s,m_electron = 9.11 × 10^-31 kg,m_neutron = 1.675 × 10^-27 kg)

• A)1.5 μm
• B)4.9 m
• C)0.93 nm
• D)1.2 km

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Definitions:

Population Proportion

The fraction or percentage of the population that exhibits a specific attribute or characteristic.

Sampling Distribution

The probability distribution of a given statistic based on a random sample, reflecting how the statistic varies from sample to sample.

Standard Error

An estimate of the standard deviation of the sampling distribution of a statistic, especially of the mean.

Probability

The chance or likelihood that a particular event will occur, quantified as a number between 0 (impossible) and 1 (certain).