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ICSE Class 10 Physics Question 2 of 27

Solved 2023 Question Paper ICSE Class 10 Physics — Question 14

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14
Question

Question 1(xiv)

When a ray of light travels normal to the given surface, then the angle of refraction is:

  1. 180°
  2. 90°
  3. 0°
  4. 45°
Answer

0°

Reason — The ray of light incident normally on a plane glass slab passes undeviated, ( i.e. such a ray suffers no bending at the surface). Thus, if angle of incidence ∠i = 0°, then the angle of refraction ∠r = 0°.