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What is the order of magnitude of secon...

What is the order of magnitude of second in a day ?

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SL ARORA-PHYSICAL WORLD AND MEASUREMENTS-problem for self practice
  1. Write the order of magnitude of the following : (i) 8 (ii) 49 (...

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  2. What is one astronomical unit ? Express it in metres . Write its or...

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  3. What is the order of magnitude of second in a day ?

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  4. IF the size of an atom ( = 1Å) were enlarged to the tip of a sharp pin...

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  5. If an atom of size 10^(-10)m were enlarged to the size of the earth (~...

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  6. if the universe were shrunk to the size, of earth, how large would the...

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  7. A 35 mm wide slide with 24 mmxx 36 mm picture is projected ona screen ...

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  8. In a submarine fitted with a SONAR, the time between the genretaion of...

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  9. A radar signal is beamed towards a planet and its echo is recived 7 mi...

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  10. A rock under water is 1595 m deep. Find the time in which an ultrasoni...

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  11. The angle of elevation of the top of a hill is 30^(@) from a point on ...

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  12. Find the distance of the moon from the earth if the parralrtic angle a...

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  13. The parallex of a heavenly body measured ffrom two points diametricall...

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  14. The angular diameter of the sun is 1920". If the distance of the sun f...

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  15. The moon is observed from two diametrically opposite points A and B on...

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  16. The radius of a muonic hydrogen atom is 2.5 xx10^(-13)m. What is the t...

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  17. A drop of olive oil of radius 0.3 mm spreads into a rectangular film o...

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  18. Consider a white dwarf and a nutron star beach of one solar mass. The ...

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  19. A neutron star has a density equal to that of nuclear matter (~= 2.8X0...

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  20. Assume that trhe mass of the nucleus is given by M=A m(p), where A in ...

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