1. When6were6X-rays6 discovered?
a. October68,61985
b. November68,61895
c. January623,61896
d. August615,61902
CORRECT6ANSWER:6B
X-rays6 were6discovered6by6Wilhelm6Conrad6Roentgen6on6November68,61895.
REFFERENCE:6p.1
2. What6type6of6tube6was6Roentgen6working6with6in6his6lab6when6X-rays6 were6discovered?
a. Crookes6tube
b. Fluorescent6tube
c. High-vacuum6tube
d. Wurzburg6tube
3. Which6of6the6following6terms6could6be6defined6as6the6instantaneous6production6of6light6only6
during6an6interaction6between6a6type6of6energy6and6some6element6or6compound?
a. Phosphorescence
b. Afterglow
c. Glowing
d. Fluorescence
CORRECT6ANSWER:6D
Fluorescence6is6the6instantaneous6emission6of6light6from6a6material6due6to6the6interaction6with6s
ome6type6of6energy.
REFFERENCE:6p.2
4. Barium6platinocyanide6was6the:
a. type6of6dark6paper6Roentgen6used6to6darken6his6laboratory.
b. material6Roentgen6used6to6produce6the6first6radiograph6of6his6wife’s6hand.
c. metal6used6to6produce6the6low-vacuum6tube.
d. fluorescent6material6that6glowed6when6the6tube6was6energized.
, 5. The6first6radiograph6produced6by6Roentgen,6of6his6wife’s6hand,6required6an6exposure6time6of:
a. 156s.
b.6 1506s.
c. 156min.
d. 1506min.
ANS: C
It6took6a615-min6exposure6time6to6produce6the6first6radiograph.
REFFERENCE:6p.3
6. The6letter6x6in6x-ray6is6the6symbol6for:
a. electricity.
b. the6unknown.
c. penetrating.
d. discovery.
ANS: B
The6letter6x6represents6the6mathematical6symbol6of6the6unknown.
REFFERENCE:6p.3
7. The6first6Nobel6Prize6for6physics6was6received6in619016by:
a. Marie6Curie.
b. William6Crookes.
c. Wilhelm6Roentgen.
d. Albert6Einstein.
ANS: C
Wilhelm6Roentgen6received6the6first6Nobel6Prize6for6physics6in61901.
REFFERENCE:6p.4
8. X-rays6 were6at6one6time6called:
a. Becquerel6rays.
b. Roentgen6rays.
c. Z-rays.
d. none6of6the6above.
ANS: B
X-rays6 were6at6one6time6called6Roentgen6rays.
REFFERENCE:6p.4
9. Erythema,6an6early6sign6 of6biologic6damage6due6to6x-ray6exposure,6is:
a. reddening6of6the6skin.
b. a6malignant6tumor.
c. a6chromosomal6change.
d. one6of6the6most6serious6effects6of6x-ray6exposure.
ANS: A
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller AGRADEPROMASTER. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $18.99. You're not tied to anything after your purchase.
