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NTS - NAT IGS Test - Physics - Geometrical Optics - Quiz 2

Practice 10 high yield MCQs on Physics from Chapter Geometrical Optics for NAT IGS Test. After submission, get instant results with correct answers and detailed explanations. This is Quiz 2 of the series.

11. What is an optically rarer medium?



12. When does total internal reflection occur?



13. What is the critical angle?



14. What principle do optical fibers work on?



15. What is the approximate critical angle for water-air interface?



16. Why does a diamond sparkle?



17. Which lens diverges light rays?



18. What is the lens formula?



19. What is the power of a lens?



20. What is the power of a convex lens of focal length 0.5 m?



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Instructions: Select one answer per question. After submitting, you will see your score, correct answers, and explanations.

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