In an experiment to study the photoelectric effect, a scientist measures the kinetic energy of ejected...

In an experiment to study the photoelectric effect, a scientist measures the kinetic energy of ejected electrons as a function of the frequency of radiation hitting a metal surface. She obtains the following plot (Figure 1). The point labeled "?0" corresponds to light with a wavelength of 523 nm.*the image wouldn't attach*

A). What is the value of ?0 in s?1?

B). What is the value of the work function of the metal in units of kJ/mol of ejected electrons?

C). Note that when the frequency of the light is greater than ?0, the plot shows a straight line with a nonzero slope. What is the slope of this line segment? Note that when the frequency of the light is greater than, the plot shows a straight line with a nonzero slope. What is the slope of this line segment?

a. The slope of the line is the value of ?, the frequency of the light.

b. The slope of the line is the value of c, the speed of light.

c. The slope of the line is the value of ?, the wavelength.

d. The slope of the line is the value of h, Planck’s constant.

Solutions

Expert Solution

Since on y-axis we are plotting the KE and on x-axis wr are plotting the frequency, hence the slope will be y/x, which will be equal to planck's constant

Hence the correct answer is Option D

queen_honey_blossom answered 1 year ago

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