
Test (9. razred 2. polugodište)
Authored by Muhamed Duhandzic
Physics
9th Grade
Used 6+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Munja je nastala na udaljenosti 3 km od nas. Za koliko ćemo je vidjeti ako je brzina svjetlosti 300 000 km/s?
1 x 10-5 s
0,001 s
0,01 s
0,1 s
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Talas frekvencije 100 MHz i talasne dužine 2 cm se kreće prema nama. Koliko ovaj talas pređe za 5 s?
1 x 105 m
10 000 000 m
1000 km
1000 m
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
U trenutku t=0 s, vidimo munju na udaljenosti od 2 km. Koliko vremena od tog trenutka treba da čujemo grom? Brzina zvuka je 333 m/s
6,01 s
2 s
3,33 s
5 min
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Frekvencija strujnih talasa u Evropi je 50 Hz. Kolika je njihova talasna dužina ako je brzina (elektrona) 5x103 m/s?
100 m
1 cm
5 cm
25 cm
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Brzina svjetlosti je 3 x 108 m/s. Koja je frekvencija žute boje koja ima talasnu dužinu od 580 nm? Da li je data frekvencija elektromagnetnog talasa (obična žuta boja) veća od frekvencije 5G mreže koja je predviđena da bude 60 GHz?
5,17 x 1014 Hz i DA
5,17 x 1014 Hz i NE
50 GHz i NE
83,45 GHz i DA
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Period je:
Vrijeme koje je potrebno za jedno ponavljanje
Vrijeme koje je potrebno da se nešto ne desi
Broj ponavljanja u jednoj sekundi i općeniti je način prikazivanja osobina talasa
Čudnovato pitanje
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Frekvencija talasa predstavlja:
Broj perioda koji se izvrši u jednoj sekundi
Vrijeme jednog ponavljanja, npr. jednog obrtaja točka
Nešto čime te mogu ubiti bez obzira na sve
Fizikalnu veličinu koja ima za cilj prikazati vrijeme nekog događaja koji se odvija u talasu, a jedinica joj je herc
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