What is vaccum ?

What is velocity of light in vaccum ?

Find the order of magnitude of the following quantities: Speed of light in vaccum =299792458 m//s

What is Avagadro number ? What is a mole ?

Choose the correct alternative and write it along with its allotted alphabet: The speed of the light in a medium of refractive index n _____ , where c is the speed of light in vaccum.

What is an atom and moleule ? What are isotopes?

What is albuminuria? What are its causes?

What is acceleration ? What are its types ?

What is a museum? What are the various specimens found in a museum?

What is Gauss' law and what is a Gaussian surface ?