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.
Hence, the Sun is a luminous object whereas the moon is a non-luminous object.
(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.
Which of the following is a non-luminous object?
(a) sun
(b) star
(c) moon
(d) fire
Write whether the following objects are luminous or non-luminous.