A non-luminous object can be converted into a luminous object by heating it to the temperature of
2000C to 3000C
1000C to 4000C
6000C to 8000C
8000C to 10000C
Hence, option B is correct.
(a) What is meant by a luminous object? Name two luminous objects.
(b) What is meant by a non-luminous object? Name two non-luminous objects.
Name an object which is non luminous at room temperature but can be made luminous by heating.