Q: The temperature about which a hot solid object emits infrared radiation alone is
(a)up to 100 °C
(b)up to 500 °C
(c)up to 1500 °C
(d)above 1500 °C
Correct Answer: (b)
The correct answer is (b): up to 500 °C. Subject: Geography | Sub-topic: Atmosphere & Climatology Note: This answer was determined through AI-based research. Verify against the official answer key when available.