Physics
Which of the following represents a relation for ''heat lost = heat gained'?

Principle of colors
Principle of vaporization
Principle of thermal equilibrium
Principle of calorimetry

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

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

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