
Test - Efectul fotoelectric extern
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În cazul producerii efectului fotoelectric extern este adevărată afirmația:
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Intensitatea curentului fotoelectric de saturație NU depinde de:
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Intensitatea curentului fotoelectric de saturație depinde de
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
În cazul efectului fotoelectric extern, NU este adevărată afirmația
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În graficul din figura alăturată sunt prezentate dependențele energiei cinetice maxime a fotoelectronilor emiși de frecvența radiației incidente pe doi fotocatozi, realizați din diferite materiale, notați A și, respectiv, B. Dacă radiația electromagnetică incidentă pe cei doi fotocatozi are frecvența ϑ =10¹⁵ Hz, atunci vor emite fotoelectroni:
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Intensitatea curentului fotoelectric de saturație NU depinde de:
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ecuația lui Einstein se scrie:
ε=L-Ec
L=ε+Ec
Ec =ε +L
ε =L+Ec
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