Question

4.90 scale units × 1/1 scale unit = 4.90 mm
for careful work, the spectroscope scale would be calibrated using a bright line spectrum with known wavelengths, and the hg bright line spectrum, being readily available from any fluorescent light, is often used for this purpose. however, in this experiment the spectroscope scale will be used as presented without additional calibration.
question 5.3.2
for each mercury bright line spectrum description below use figure 5.3.2 to determine the associated scale value and the use the scale value to estimate the wavelength of line.
enter the scale value to the nearest 0.05 scale value unit. do not in clude the unit.
enter the wavelength value in nm to the nearest 5 nm. do not include the unit.
description|scale value|wavelength
a. longer wavelength green line|5.4|540 nm
b. strong red line|6.0|600 nm

Explanation:

Step1: Identify data from the table

For the longer - wavelength green line, the scale value is 5.4 and the wavelength is 540 nm. For the strong red line, the scale value is 6.0 and the wavelength is 600 nm. These values are directly read from the given table as per the requirements of the problem which asks to determine the scale value and estimate the wavelength for each mercury bright - line spectrum description.

Answer:

a. Scale value: 5.4, Wavelength: 540
b. Scale value: 6.0, Wavelength: 600