What is meant by a non-luminous object? Name two non-luminous objects.
(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.
Choose the correct options and fill in the blank:
The Sun is a __________ (luminous/ non-luminous) object whereas the moon is a _________ (luminous/ non-luminous) object.
Is Venus a luminous or a non luminous object?