For a light ray- if the glancing angle of incidence is 30- then the angle of incidence will be

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Standard X

Physics

Critical Angle

For a light r...

Question

For a light ray, if the glancing angle of incidence is $30^{\circ}$ , then the angle of incidence will be

30^{\circ}

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60^{\circ}

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90^{\circ}

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150^{\circ}

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Solution

The correct option is B $60^{\circ}$
Glancing angle $= 90^{o} -$ angle of incidence

Hence, angle of incidence= $90^{o} - 30^{o} = 60^{o}$

Answer-(B).

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For a light ray, if the glancing angle of incidence is 30∘, then the angle of incidence will be

The correct option is B 60∘Glancing angle =90o− angle of incidenceHence, angle of incidence=90o−30o=60oAnswer-(B).

For a light ray, if the glancing angle of incidence is $30^{\circ}$ , then the angle of incidence will be

The correct option is B $60^{\circ}$
Glancing angle $= 90^{o} -$ angle of incidence

Hence, angle of incidence= $90^{o} - 30^{o} = 60^{o}$

Answer-(B).