Physics
Holography is a technique of

Recording a permanent, sharp two diimensional black and white or multicolour photograph
Recording a permanent three dimensional multicolour photograph
Recording a permanent three dimensional photograph of a given single colour or a multicolour
Recording a permanent three dimensional black and white photograph

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

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

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