Question

doris is studying how items that produce light also produce heat, such as the sun. she wants to make a list of things that produce both light energy and heat energy. which of these is the best example of an item that produces both heat and light?
a guitar
b lamp
c fan
d television

Explanation:

To determine the best example, analyze each option:

• A guitar produces sound, not significant heat/light.
• A lamp (especially incandescent or halogen) produces light and generates heat (due to electrical energy conversion).
• A fan produces motion (airflow), not heat/light as its primary output.
• A television produces light (screen) but minimal heat compared to a lamp’s primary heat + light production.

Answer:

b. lamp