A rectangular glass slab is placed at the bottom of vessel filled with water. A ray is incident at an angle of incidence 50^(@) on the surface of water and on being refracted through water becomes incident on the glass slab. What is the angle of refraction in the glass slab? Refractive indices of water and glass are (4)/(3) and (3)/(2) respectively. [sin 50^(@)= 0.766, sin 30^(@)43' = 0.5108]

A rectangular glass slab is placed at the bottom of vessel filled with

1.	A rectangular glass slab is placed at the bottom of vessel filled with water. A ray is incident at an angle of incidence 50^(@) on the surface of water and on being refracted through water becomes incident on the glass slab. What is the angle of refraction in the glass slab? Refractive indices of water and glass are (4)/(3) and (3)/(2) respectively. [sin 50^(@)= 0.766, sin 30^(@)43' = 0.5108]
Answer» ANSWER :`30^(@)43'`

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