Which of the following instruments is used to measure the intensity of light?
A. Thermocouple
B. Spectrophotometer
C. Manometer
D. Hygrometer
Answer:B
Which of the following instruments is used to measure the intensity of light?
A. Thermocouple B. Spectrophotometer C. Manometer D. Hygrometer
Explanation: A spectrophotometer is a device used to measure the intensity of light at different wavelengths. It works by splitting light into its component colors and measuring the intensity of each color.