Question

spectrophotometers measure...

select one:
a. light absorption
b. pressure
c. conductivity
d. mass

Explanation:

Identify the function of a spectrophotometer

A spectrophotometer is an instrument that measures the intensity of light as a function of its wavelength. Specifically, it quantifies how much light a chemical substance absorbs by measuring the intensity of light as a beam passes through sample solution.

Evaluate the given options

• a. Light absorption: This is the primary quantity measured by a spectrophotometer.
• b. Pressure: Measured by a barometer or pressure sensor.
• c. Conductivity: Measured by a conductivity meter.
• d. Mass: Measured by a balance or scale.

Select the correct option

Option (a) is the correct choice.

Answer:

• a. Light absorption (Correct answer)
• b. Pressure
• c. Conductivity
• d. Mass