Phase Contrast Microscope Principle & Working (Hindi) | GPAT Lecture | NEET | CSIR NET MCQ | GATE | 

IN this lecture Phase Contrast Microscope Principle & Working discussed .
Ray diagram & phase shift also discuss with its structure.
MCQ on microscope also discussed at the end of lecture.
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MCQ on phase contrast microscope
Q.1 Who discover Phase contrast Microscope
A. Robert Koch
B. A. Fleming
C. Frits Zernike
D. Ernst Ruska
Q.2 In Phase contrast Microscope which special component in its structure differ it from other Microscope
A. Objective Lens
B. Condenser
C. Phase Ring
D. All of these
Q.3 True statement about Phase contrast Microscope
A. Direct light can be advance by λ/4 with the help of phase space
B. Diffracted light from specimen can be retarded by λ/4
C. Both
D. None
Q.4 In Phase contrast Microscope image formed due to
A. Constructive interference
B. Destructive interference
C. Both
D. None
Q.5 What are the advantages of Phase contrast Microscope
A. Not required staining
B. Living cell can be visualize
C. Contrast with background is good
D. All
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