Question

at the face BC - rellu.
24. Copy the diagram (Fig. 4.68) given below and
complete the path of the light ray till it emerges out
of the prism. The critical angle of glass is 42º. In
your diagram mark the angles wherever necessary.
A
Р
60°
90°
Q
60°
60°
B.
C
Fig. 4.68​

Answer 1

Answer:

366

Explanation:

because . 60° is the angle

Answer 2

Answer:

366

Explanation:

because 60° is an triangle