The angle of refraction, when a light ray approaches a glass-air interface from the glass side at the critical angle, will be :

0^{o}

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45^{o}

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90^{o}

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equal to the angle of incidence

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Solution

The correct option is B $90^{o}$
When the angle of incidence reaches a value known as the critical angle the refracted rays travel along the surface of the medium or in other words are refracted to an angle of 90°
Hence the option C is the right answer

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Similar questions

Q. Figures (a) and (b) show the refraction of a ray in air incident at

60^{o}

with the normal to a glass-air and water-air interface, respectively. Predict the angle of refraction in a glass when the angle of incidence in water is

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with the normal to a water-glass interface [Fig.(c)].

Glass has refractive index u with respect to air and the critical angle for a ray of light going from glass to air is $θ$ . If a ray of light is incident from air on the glasses with the angle of incidence $θ$ , the corresponding angle of refraction is

Q. (a) Calculate the critical angle for glass air interface if a ray of light incident on a glass surface is deviated through

15^{o}

when angle of incident is

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\sqrt{2}

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Q. Calculate the critical angle for glass-air interface if a ray of light incident on a glass surface is deviated through

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a ray of light which is incident in air on the surface of a glass block is deviated through 15 degre. the angle of incidence in air is 60 degre . what is the angle of refraction in glass also calculate the critical angle for glass in air interface?

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The angle of refraction, when a light ray approaches a glass-air interface from the glass side at the critical angle, will be :

The correct option is B 90oWhen the angle of incidence reaches a value known as the critical angle the refracted rays travel along the surface of the medium or in other words are refracted to an angle of 90°Hence the option C is the right answer

The correct option is B $90^{o}$
When the angle of incidence reaches a value known as the critical angle the refracted rays travel along the surface of the medium or in other words are refracted to an angle of 90°
Hence the option C is the right answer