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Choose the Correct Alternative and Rewrite the Following Sentence. a Ray of Light Strikes the Glass Slab at an Angle of 50°. What is the Angle of Incidence? - Science and Technology 1

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MCQ

Choose the correct alternative and rewrite the following sentence.

A ray of light strikes the glass slab at an angle of 50°. What is the angle of incidence?

Options

  • 50°

  • 90°

  • 60°

  • 40°

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Solution

40°

The ray of light strikes at an angle of 50 with the horizontal. The angle of incidence is with respect to the normal, so the angle of incidence is 90° − 50° = 40°.

Concept: Refraction of Light Through a Rectangular Glass Slab
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