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(-I-) a) medium 1 is the more refractive medium because the refracted ray deviated away from the normal . OR. b)Limiting angle (critical angle). d) = , then the incident ray is reflected. ( Total internal reflection ) .
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(-I-) a) medium 1 is the more refractive medium because the refracted ray deviated away from the normal .OR b)Limiting angle (critical angle) d) = , then the incident ray is reflected. ( Total internal reflection ) e)If the incident ray is perpendicular to the surface of separation, then it will continue without any deviation . f) Medium 1, Since > < = m/s g) (-II-) a) Medium 2. =42, since the ray just emerge grazing the surface of separation (. b) Fig 2 Fig 3 = , then the incident ray is reflected. ( Total internal reflection ) c) 2nd Law of reflection d) No, If a ray of light travels from a less refracting into a more refracting medium, it is refracted towards the normal in all cases.