Photometer is used to measure
A
Kinetic energy of liberated electrons
B
Intensity of light
C
frequency of light
D
wavelength of light
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
A photometer is used to measure the intensity of light.
Photometers can determine the brightness of light sources, compare light intensity from different sources, or measure the amount of light reaching a specific point. They are commonly used in photography, astronomy, and various scientific applications to ensure proper lighting conditions
Source: WAEC / JAMB / NECO Classroom Archive (Record #70693)