The cross-section of a glass prism has the form of an isosceles triangle. One of the refracting faces is silvered. A ray of light falls normally on the other refracting face. After being reflected twice, it emerges through the base of the prism perpendicular it. The angles of the prism are |
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a) |
b) |
c) |
d) |

The cross-section of a glass prism has the form of an isosceles triangle. One of the refracting faces is silvered. A ray of light falls normally on the other refracting face. After being reflected twice, it emerges through the base of the prism perpendicular it. The angles of the prism are |
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a) |
b) |
c) |
d) |

1 Answer

127 votes

Form Or Now, complementary angle at point Only option (b) satisfies this |

127 votes

127