For starters, Sahare sir won’t ask Viva questions for Jamin’s interferometer. Relax. 😛
Secondly. as far as I know, Jamin’s interferometer works on the principle that the optical path of light changes in presence of liquid and in its absence, and the substance present should be transparent and not opaque for the light to pass through the tube.
So the interferometer would work with water but not with oil, or blood.
However, it is tough to think of a vacuum pump that would drain out a liquid from a tube and create a vacuum. Doing that with air is easier.
Man, sahare sir was not even there in our lab.. Moreover, viva voces are already over..everyone seems to in relaxed mood.. The question came out of curiosity..
Anyways thanks for your response..!
We are going to give Viva to sahare sir…wish us best of luck….