
Appareils et Rayons X
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Physics
University
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le composant principal du tube de Coolidge qui émet des électrons ?
L’anode en tungstène
La cathode
Le vide poussé
Le collimateur
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle fraction de l’énergie consommée par un tube à rayons X est convertie en rayons X ?
50%
10%
1%
25%
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel phénomène génère le spectre continu des rayons X ?
Ionisation des couches K
Décélération des électrons (Bremsstrahlung)
Transition L → M
Effet photoélectrique
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel matériau est couramment utilisé pour la cible (anode) dans un tube à rayons X ?
Cuivre
Tungstène
Aluminium
Plomb
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
À quoi sert le vide poussé dans le tube de Coolidge ?
Refroidir la cathode
Éviter les collisions des électrons avec les molécules d’air
Augmenter la tension accélératrice
Réduire le bruit des rayons X
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle unité mesure la tension accélératrice dans un tube à rayons X ?
Watts (W)
Hertz (Hz)
Kilovolts (kV)
Millimètres (mm)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel effet biologique est associé aux rayons X ?
Stimulation musculaire
Ionisation des atomes
Réchauffement des tissus
Augmentation de la circulation sanguine
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