188
A) α>α'
B) α<α'
C)
α=α'
D) α=α'/2
6. . Tushish burchagi 30
o
sinish burchagi esa 60
o
ga teng bo’lsa,
ikkinchi
muhitning birinchi muhitga nisbatan sindirish ko’rsatkichi nimaga teng?
A)
√𝟑/𝟑
B)
√3
C) 0,5
D) 2
7. Difrakstion panjaraga yorug’lik tik tushmoqda. Tushayotgan yorug’likning
to’lqin uzunligi 0,5 mkm ga panjara doimiysi 2,4 mkm ga teng bo’lsa, ekranda
nechta bosh maksimum kuzatiladi?
A)5
B)11
C) 10
D)
9
8. Tushish burchagi α ga, sinish burchagi esa β ga teng bo’lsa,
qanday shart
bajarilganda qaytgan nur to’liq qutblangan bo’ladi?
A)α+β=110
o
B) α+β=100
o
C) α+β=90
o
D) α-β=45
o
9. Chastotasi 4·10
14
Gst bo’lgan yorug’likning to’lqinining to’lqin
uzunligi necha
mkm ga teng?
A)
0,75
B)0,4
C)7,5
D)1,33
10. Yassi ko’zgu bilan tushayotgan yorug’lik nuri orasidagi burchak 53
o
bo’lsa, qaytish
burchagi nimaga teng?
A)53
o
B) 37
o
C) 64
o
D) 47
o
