Question Detail

MIC 121 Microscopes Objective Question
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Question

In Dark-Field microscopy, what is the purpose of the opaque disk in the condenser?
Options
A To focus the light directly onto the specimen.
B To block all light from entering the objective lens directly.
Correct Answer
C To reflect light from the specimen towards the eyepiece.
D To change the wavelength of the illuminating light.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 7 explains, 'An opaque disk of this condenser blocks the light that would enter the objective lens directly'. This allows only reflected or refracted light from the specimen to form an image.

Hint

Think about how 'dark-field' is achieved – how is the direct light managed?

Question Info

Course: MIC 121
Topic: Microscopes
Type: Objective
Difficulty: Not specified
Question 19 of 990
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