Explain the Sound ?
Explain the Types of Refrigeration ?
How can light be defined in simplest form?
What is black body and what are its characteristics? : quantum physics
Define Penumbra ?
How are amps and watts related?
what is the meltng point of copper?.
Explain the Amorphous ?
Which lens is used for correcting long ?sightedness ?
What is Vaporization ?
what is meant patch cards..
If blue light is combined with green light, what color of light is produced?
What is an electron?