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Cross word puzzle : Across ,The bending ...

Cross word puzzle : Across ,The bending of a light ray when it passes from one medium to another medium of different density.

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Why does a ray of light bend when it travels from one medium to another?

The ray of light gets deviated when it passes from one medium to another medium because …………….. .

Cross word puzzle : Across ,The formation of rainbow is an example of .

If a ray of light passes obliquely from one medium to another, it does not suffer any deviation.

Cross word puzzle : Across : The pressure exerted by air.

Cross word puzzle : Across : Amount of force applied per unit area.

Cross word puzzle : Across , Centre of the sphere from which the mirror is made.

The change in ……………… of light while going from one medium to another is called refraction.

Cross word puzzle : Across : A force acting normal to a surface.

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  1. Cross word puzzle : Across ,The bending of a light ray when it passes ...

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  2. What is called a spherical mirror?

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  3. Define focal length

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  4. The radius of curvature of a spherical mirror is 25 cm Find its focal ...

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  5. Give two applicatiuon of a concave and convex mirror.

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  6. State the laws of reflection.

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  7. If two plane mirrors are inclined to each other at an angle of 45^@, f...

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  8. Define refractive index of a medium.

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  9. State the Snell's law of refraction.

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  10. Explain the images formed by a concave mirror for different position o...

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  11. What is reflection? Write short notes on reguler and irregular reflec...

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  12. Explain the working of a periscope.

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  13. What is dispersion? Explain in detail.

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  14. Speed of light in air is 3 xx 10^8 m s^-1 and the refractive index of ...

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  15. Speed of light in air is 3 xx 10^8 m s^-1 and light in the medium is ...

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  16. We can see things around us only when the light reflected by them rea...

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  17. Light is a from of energy and it travels in a straight line.

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  18. The periscope is an optical device with a polished surface that reflec...

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  19. Curved mirrors have surface that are spherical, cylindrical,parabolic ...

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  20. Curved mirrors from the perfact image of an object.

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  21. Curved mirrors produce images that are eigher enlarged or diminished.

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