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What do you understand from the term 'Re...

What do you understand from the term 'Refractive index' of a medium or a substance ?

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The refractive index of a substance is a measure of how much the speed of a light ray changes when compared to its speed in air or vacuum.
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ZEN PUBLICATION-LIGHT - REFLECTION AND REFRACTION-ZEN ADDITIONAL QUESTIONS SECTION (VERY SHORT ANSWER TYPE QUESTIONS) VSA
  1. A convex lens is immersed in a container of water. Will this cause a c...

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  2. When a light ray emerges out after refraction at a rectangular glass s...

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  3. Define the following terms in the context of spherical mirrors : (...

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  4. What is the minimum distance between an object and its real image in t...

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  5. Why does ray of light passing through the centre of curvature of a con...

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  6. When a light ray is incident normally on a mirror. What is its angle o...

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  7. What is the relation between focal length of a spherical mirror and it...

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  8. Express the relation between the power (P) and the focal length of a l...

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  9. List the important factor on which the ability of a lens to converge o...

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  10. A light ray travelling from medium 1 to medium 2, does not suffer refr...

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  11. What do you understand from the term 'Refractive index' of a medium or...

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  12. Lens X has focal length 20 cm and lens Y has focal length 40 cm. Which...

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  13. Concave mirrors A and B each focal length - 15 cm. Concave mirror A ha...

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  14. A convex lens has a focal length 15 cm. A student obtains a clear shar...

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  15. Can we find the focal length of a concave lens using the distant objec...

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  16. A concave mirror is dipped in vessel containing kerosene. Will this af...

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  17. What is the kind of mirror used by an ENT specialist to examine the ea...

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  18. A convex lens is immersed in a container of water. Will this cause a c...

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  19. When a light ray emerges out after refraction at a rectangular glass s...

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  20. Define the following terms in the context of spherical mirrors : (...

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