Question

A spectrograph is used to:

A. "see" radio waves
B. Measure distance
C. Photograph the light spectrum
D. Analyze infrared and ultraviolet rays

Answer 1

I believe it is C.

Step-by-step explanation:

I had to do this lesson as well and I got it wrong, so it is C.

Answer 2

The answer is C. A spectrograph is an instrument used to obtain and record an astronomical spectrum. The spectrograph splits or disperses the light from an object into its component wavelengths so that it can be recorded then analysed.