A luminous object is one that
...A luminous object is one that
gives off dim blue-green light only in the dark.
gives out light of its own
shines by reflected light only
glows only in the presence of light
Correct answer is B
No explanation has been provided for this answer.
A body moves with a constant speed but has an acceleration. This is possible if it ...
The relationship between L and the wavelength I of the stationary wave is ...
A simple cell with mercury-amalgamated zinc electrode prevents ...
Which of the following is correct about light and sound waves? ...
The secondary pigments consist of? ...
An empty density bottle weighs 2 N. if it weighs 5 N when filled with water and 4 N when filled...
The statement that the mechanical advantage of a machine is 3 means that the ...
Silicon doped with aluminum and germanium doped with arsenic become? ...