Unde electromagnetice_2
Quiz
•
Physics
•
11th Grade
•
Practice Problem
•
Medium
Maria Tamas
Used 2+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. Undele EM se propagă cu:
a) Viteza sunetului
b) Viteza curentului electric
c) Viteza luminii (~3 × 10⁸ m/s)
d) Viteza mecanică a sursei
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. Infraroșul este utilizat în:
a) Detectarea fracturilor osoase
b) Vizualizarea termică
c) Comunicație satelitară
d) Diagnosticarea cancerului
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3. Care dintre următoarele este o undă EM?
a) Sunetul
b) Unda seismică
c) Razele X
d) Unda longitudinală
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. Microundele sunt utilizate în:
a) Sisteme radar
b) Spectroscopie cu raze X
c) Iluminat
d) Detectare seismică
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5. Lumină vizibilă: interval de lungimi de undă?
a) 10 nm – 100 nm
b) 400 nm – 700 nm
c) 700 µm – 1 mm
d) 3 cm – 30 cm
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6. Sursa naturală majoră de unde EM:
a) Magnetul Pământului
b) Soarele
c) Nucleele atomice
d) Gravitația
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7. Ce domeniu de frecvență au undele UV?
a) 10¹⁵ – 10¹⁷ Hz
b) 10³ – 10⁵ Hz
c) 10⁸ – 10¹⁰ Hz
d) 10 – 100 Hz
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