Question

Contrast decreases as you close the iris diaphragm aperature. True False

Contrast decreases as you close the iris diaphragm aperature.

True

False

Science   Biology   
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Answer #1

Answer: False

Explanation: There are two parts present in the microscope that regulate the amount of light that is visible through the ocular.

- These are:

  • condensor
  • iris diaphragm

- Iris diaphragm is the one that opens and closes the condenser, allowing the amount of light to be passed.

- Closing the iris diaphragm will decrease the brightness and the resolution but will enhance and increase the contrast.

- So, we can adjust and set the arrangements according to the specimen we have. Like this arrangement can be used for faintly stained samples.

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