#### Question

While tracing the path of a ray of light passing through a rectangular glass slab a student tabulated his observations as given below:

S.NO. |
∠i |
∠r |
∠e |

I |
60° |
40° |
61° |

II |
50° |
36° |
51° |

III |
40° |
28° |
39° |

IV |
30° |
20° |
31° |

The correct observations is:

(A) I

(B) II

(C) III

(D) IV

#### Solution

Using Snell’s law, sin i/sin r = n_{2}/n_{1}, check the ratio of the sine values of i and r which gives 1.5 (we know, n_{2}=1.5 and n_{1}=1) will be the answer.

The Correct Answer is D

Is there an error in this question or solution?

Solution While Tracing the Path of a Ray of Light Passing Through a Rectangular Glass Slab a Student Tabulated His Observations as Given Below: Concept: Refraction of Light - Refraction Through a Rectangular Glass Slab.