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The principle used in optical fibre is...

The principle used in optical fibre is ____

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The correct Answer is:
total internal reflection fo light.
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PRADEEP-PHYSICAL WORLD AND MEASUREMENT-Fill in the blanks
  1. Physics is a branch of ……….. Which deals with the study of ………….

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  2. Techonology is …………….. For……………

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  3. The principle used in optical fibre is

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  4. Radio and television are based on…………..

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  5. Magnetic confinement of plasma is the basis of ………..

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  6. Role of DNA in heredity is the basis of ………….

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  7. Computers are based on…………

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  8. The process of measurement is basically a ……………

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  9. A bigger unit is contained ………………….. Of times in the quantity.

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  10. Mass of a body is defined as the ………. Which can …………….

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  11. According to Einstein, time is …………….

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  12. The units of measurement of ……………….. And …………….. Are called …………….. .

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  13. The SI unit of luminous intensity is

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  14. One radian is the angle subtended at …………. By an arc ……………… .

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  15. One light year is ……………. In vacuum in…………….. .

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  16. The year in which there is total solar eclipes is called a …………….. .

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  17. An area of 10^4 m^2 is called ……………… .

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  18. Order of magnitude of a quantity is the ……….., which gives us a value…...

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  19. The estimated size of observable universe is of the order of………

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  20. The parallax method has been used for measuring distances of stars, wh...

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