ACB is right-angled glass prism of refra...

ACB is right-angled glass prism of refractive index 1.5 . `/_A` ` /_B` and `/_C` are `60^@` ` 30^@` and `90^@` respectively.A thin layer of liquid is on the AB. For a ray of light which is incident normally on AC to be totally reflected at AB the refractive index of the liquid on AB should be

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ABC is a right angled glass prism of refractive index, 1.5 /_A, /_B and /_C are 60^(@), 30^(@) and 90^(@) respectively. A think layer of liquid is on the AB. For a ray of light is incident normally on AC to be totally reflected at AB, the refractive index of the liquid on AB should be

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ACB is right-angled prism with other angles as 60^(@) and 30^(@) . Refractive index of the prism is 1.5. AB has thin layer of liquid on it as shown. Light falls normally on the face Ac. For total internal reflection, maximum refractive index of the liquid is

ACB is right-angled glass prism of refractive index 1.5 . `/_A` ` /_B` and `/_C` are `60^@` ` 30^@` and `90^@` respectively.A thin layer of liquid is on the AB. For a ray of light which is incident normally on AC to be totally reflected at AB the refractive index of the liquid on AB should be

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