Two small angled prisms of refractive index 1.6 and 1.5 are arranged such that light ray passes through the combination without deviation. The angle of prism for the prism of refractive index 1.5 is 4°. Find the angle of prism of the other

Two small angled prisms of refractive index 1.6 and 1.5 are arranged s

1.	Two small angled prisms of refractive index 1.6 and 1.5 are arranged such that light ray passes through the combination without deviation. The angle of prism for the prism of refractive index 1.5 is 4°. Find the angle of prism of the other
A.	10°
B.	2°
C.	\(\frac{{10^\circ }}{3}\)
D.	\(\frac{{20^\circ }}{3}\)
Answer» D. \(\frac{{20^\circ }}{3}\)