In the adjoining diagram, a wavefront AB, moving in air is incident on a plane glass surface XY. Its position CD after refraction through a glass slab is shown also along with the normals drawn at A and D. The refractive index of glass with respect to air ($$\mu =1$$) will be equal to [CPMT 1988; DPMT 1999]

Question

In the adjoining diagram, a wavefront AB, moving in air is incident on a plane glass surface XY. Its position CD after refraction through a glass slab is shown also along with the normals drawn at A and D. The refractive index of glass with respect to air ($$\mu =1$$) will be equal to  [CPMT 1988; DPMT 1999]

TuteeHUB · Accepted Answer

$$\frac{\sin \varphi '}{\sin \theta }$$

TuteeHUB · Answer

$$\frac{\sin \theta }{\sin \theta '}$$

TuteeHUB · Answer

$$\frac{\sin \theta }{\sin \varphi '}$$

TuteeHUB · Answer

$$\frac{AB}{CD}$$

1.	In the adjoining diagram, a wavefront AB, moving in air is incident on a plane glass surface XY. Its position CD after refraction through a glass slab is shown also along with the normals drawn at A and D. The refractive index of glass with respect to air (\[\mu =1\]) will be equal to [CPMT 1988; DPMT 1999]
A.	\[\frac{\sin \theta }{\sin \theta '}\]
B.	\[\frac{\sin \theta }{\sin \varphi '}\]
C.	\[\frac{\sin \varphi '}{\sin \theta }\]
D.	\[\frac{AB}{CD}\]
Answer» C. \[\frac{\sin \varphi '}{\sin \theta }\]

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