Physics
Which one of the following is the correct sequence of passage of light in a compound microscope?

Condenser -Objective lens -Body tube -Eyepiece
Eyepiece -Objective lens -Body tube -Mirror
Objective lens -Condenser -Body tube -Eye piece
Condenser -Objective lens -Eye -piece -Body tube

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Physics
Which of the following is not a property of heavy water ?

Boiling point of heavy water is lower than that or ordinary water
Density of heavy water is higher than that of ordinary water
Freezing point of heavy water is higher than that of ordinary water
It produces corrosion

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Physics
Conservation of energy refers to the fact that

If you conserve energy you will not be as tired
No chemical reaction is 100 percent efficient
Energy cannot be created or destroyed but can be converted from one form to another
The entropy of the universe is always increasing

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