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.
Neutrons are used to induce artificial radioactivity because they ...
The direction of the path taken by light is called ...
Light from the Sun reaches us in nearly ...
The earpiece of a telephone handset converts energy from ...
Totally reflecting prisms are preferred to mirrors in periscopes because I. mirror givegive multi...