NDA Physics quiz Optics

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Quiz

Question 1. The speed of light is maximum in:
Question 2. The bending of light when it passes from one medium to another is called:
Question 3. The focal length of a convex lens is:
Question 4. Which lens is used to correct short-sightedness (myopia)?
Question 5. Which mirror is used in vehicle headlights?
Question 6. The unit of power of a lens is:
Question 7. Which phenomenon is responsible for the formation of a rainbow?
Question 8. The image formed by a plane mirror is always:
Question 9. The phenomenon of light bending around corners of small obstacles is called:
Question 10. The colour of the sky appears blue due to:
Question 11. The escape velocity of Earth is nearly:
Question 12. The force that keeps planets in their orbits around the Sun is:
Question 13. Kepler’s first law of planetary motion states that planets move around the Sun in:

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