CBSE Class 10 Science 2021 Term 1 Solved Paper

Question : 23

Total: 60

A ray of light is incident as shown. If A. B and C are three different transparent media, then which among the following options is true for the given diagram?

∠1>∠4
∠1<∠2
∠3=∠2
∠3>∠4

Solution:

From the given diagram ∠1>∠2 and ∠4>∠3. From the geometry of the figure, the two normals are parallel to each other and L2 and L3 are alternate interior angles.
∠3=∠2‌. ‌

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