Question 10. The best ideal black body is (a) Lamp of charcoal heated to high temperature (b) Metal coated with a black dye (c) Glass surface coated with coalter (d) Hollow enclosure blackened inside and having a small hole Answer
An ideal black body is a : A. lump of charcoal heated to a high temperature. B. metal coated with a black dye. C. glass surface coated with coal tar. D. hollow enclosure blackened inside and having a small hole.
d option is right
