Question

Two objects of the same size are both perfect blackbodies. One has a temperature of 3000 K, so its frequency of maximum emission is in the infrared region of the spectrum. The other has a temperature of 12,000 K, so its frequency of maximum emission is in the ultraviolet region of the spectrum.

Compared to the object at 3000 K, the object at 12,000 K:

A. emits more light in the infrared region of the spectrum.

B. emits more light in the visible region of the spectrum.

C. emits more light in the ultraviolet region of the spectrum

D. emits more light in only two of the three listed spectral regions.

E. emits more light in all three spectral regions.

Answer 1

The object at 12,000 K emits more light in the ultraviolet region of the spectrum compared to the object at 3000 K.

Step-by-step explanation:

When comparing the two objects, we can see that the object at 12,000 K emits more light in the ultraviolet region of the spectrum compared to the object at 3000 K. This is because as the temperature of an object increases, the frequency of maximum emission also increases. The object at 12,000 K has a higher frequency of maximum emission, which falls in the ultraviolet region of the spectrum.