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Add 6.75xx10^3 cm to 4.52xx10^2 cm....

Add `6.75xx10^3 cm to 4.52xx10^2 cm.`

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Let `a=6.75xx10^(3)cm`
`b=4.52xx10^(2)cm=0.452xx10^(3)cm`
`=0.45xx10^(3) cm` (upto 2 place of decimal)
`therefore` Addition of significant figures
`a+b=(6.75xx10^(3)+0.45xx10^(3)) cm=7.20xx10^(3) cm`
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  8. The dimensional formula of electric flux is

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  9. If energy (E), velocity (v) and time (T) are chosen as the fundamental...

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  10. Match the following two columns. {:(,"Column I",,"Column II"),("A.",...

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  14. The dimensional formula for Reynold's number is

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  16. In which of the following pairs, the two physical quantities have diff...

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  17. If the absoulte errors in two physical quantites A and B are a and b r...

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  18. If force (F), velocity (V) and time (T) are taken as fundamental units...

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  19. If the unit of force is 1 kN, unit of length 1 km and unit of time is ...

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  20. The dimensional formula for magnetic flux is

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  21. The dimensional formula for electric field is

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