BC2 - Microscope
Quiz
•
Biology
•
University
•
Practice Problem
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Medium
Christèle COLLADOS
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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Identifier les paramètres qui interviennent dans le pouvoir de séparation (= résolution) d'un microscope
longueur d'onde
quantité de lumière (ouverture numérique)
grossissement
distance de la lame
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La longueur d'onde minimale de la lumière visible est d'environ 400 nm.
Déduire le pouvoir de résolution moyen d'un microscope optique
2000 nm
200 nm
20 nm
2 nm
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel constituant du microscope focalise les rayons sur l'échantillon ?
Condensateur
Diaphragme
Objectif
Oculaire
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel constituant du microscope capte les rayons ayant traversé l'échantillon ?
Condensateur
Diaphragme
Objectif
Oculaire
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pour observer un échantillon épais (état frais), le diaphragme du condensateur est
ouvert
fermé
sans importance
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pour observer un échantillon fin (frottis coloré), le diaphragme du condensateur est
ouvert
fermé
sans importance
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A quoi correspond le grossissement du microscope ?
au grandissement de l'objectif (G objectif)
au grossissement de l'oculaire (G oculaire)
G oculaire X G objectif
G oculaire + G objectif
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