In a dark room, four items are placed: a lit candle, a hot electric iron, a polished steel bowl, and an activated glow-stick. Which option lists ONLY artificial luminous sources?

Question

Aicharya · Accepted Answer

Both a lit candle and an activated glow-stick emit light produced by human-made objects, whereas a polished bowl only reflects light.

In a dark room, four items are placed: a lit candle, a hot electric iron, a polished steel bowl, and an…

Solution