
Hipótesis de Planck
Authored by Javier Sánchez
Physics
1st - 3rd Grade

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3 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
¿Cuál es la temperatura aproximada de la superficie de una estrella que emite Luz azul de 4 600 Á de longitud de onda en su máximo de intensidad?
6300 k
2500 k
1500 k
8000 k
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
¿Qué fotón es más energético, el de luz verde o el de luz ultravioleta?
El verde
El ultravioleta
Los dos por igual
Answer explanation
Como la frecuencia aumenta según nos desplazamos al UV, y la energía según la ecuación de Planck (E = h . f) es directamente proporcional a la frecuencia, el fotón del UV será más energético que el fotón verde.
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Un foco de luz monocromática emite ondas electromagnéticas de 620 nm de longitud de onda.
a) ¿Cuál es la energía de cada fotón?
b) ¿Qué potencia tiene el foco si emite 1020 fotones por segundo?
a) E = 3,2 . 10-19 J
b) P = 32 W
a) E = 6,1 . 10-20 J
b) P = 48
a) E = 2,5 . 10-17 J
b) P = 25 W
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