Use the Following Figure for the Next Two Questions $\times$ 10^-19 J

question 8

Multiple Choice

Use the following figure for the next two questions.
Apparatus for studying the photoelectric effect
-The work function of the material being investigated is 3.8 $\times$ 10^-19 J.Light of a wavelength 350 nm is incident on the material.What is the lowest voltage needed between the cathode (C) and the anode (A) to stop any electrons ejected from the cathode from reaching the anode?

• A)2.37 V
• B)1.17 V
• C)3.54 V
• D)4.71 V
• E)None of these is correct.

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Definitions:

Probabilities

Measuring how likely it is for an event to occur, using a numeric scale that falls between 0 and 1.

Normal Probability Distribution

A bell-shaped probability distribution characterized by its mean and standard deviation, describing how random values are spread or dispersed.

Parameters

Quantitative values that define the behavior and characteristics of a model or function.

Classical Definition

The Classical Definition, often referred to in the context of probability, is an approach where the probability of an event is calculated by dividing the number of favorable outcomes by the total number of equally likely outcomes.