ray Flashcards
1
Q
the rfractive index of - is higher than cladding in optical fibres
A
core
2
Q
refractive index for glass
A
1.5
3
Q
the critical angle for glass- air interface is
A
42 degree
4
Q
power of lens
A
the ability of lens to converge or diverge a ligh ray
5
Q
convex lens usual behaviour
converging or diverging
A
converging
5
Q
SI unit of power
A
dioptre
5
Q
what happens to a concave lens when placed in medium of higher R,I
A
it would show convering behaviour unlike usualo diverging behaviour
6
Q
concave lense usual behaviour
A
diverging
7
Q
in denser med if angle of i = angle of critical value then the refraction angle will be
A
90
8
Q
A
