Question

Choose luminous objects among the following:

A. Table Lamp

B. Wood

C. Painting


D. Torch

Answer 1

• An object is luminous when it emits light of its own and an object is non-luminous when it doesn’t emit light of its own.(1 Mark )
  
• The table lamp shown in option A is glowing and hence, is emitting light of its own. Similarly, the torch is also lit up. This makes both the table lamp as well as the torch luminous in nature . (1 Mark )
  
• On the other hand, wood and the painting do not emit light of their own and hence, are non-luminous in nature (1 Mark )