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Dimensional formulae are used A) to co...

Dimensional formulae are used
A) to convert one system of units into another
(B) to find proportionality constants
C) to cheak the correctness of an equation

A

Only a & b are true

B

Only C is true

C

A & C are true

D

All the true

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The correct Answer is:
C
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AAKASH SERIES-UNITS AND MEASUREMENT-EXERCISE - I
  1. (A) All zeros to the right of the last nonzero digit after the decimal...

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  2. If the immediate insignificant digit to be dropped is 5 then there wil...

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  3. (A) In multiplication or division, the final result should retain only...

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  4. The correct order in which the dimensions of 'Length" increases in the...

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  5. Dimensional formulae are used A) to convert one system of units into...

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  6. (A) The correctness of an equation is verified using the principle of ...

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  7. Which of the following is not a unit of time A) par - sec " " B)...

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  8. For a body in a uniformly accelerated motion, the distance of the body...

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  9. Three of the quantities defined below has the same dimensional formula...

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  10. If e, E0, h and C respectively represents electronic change, permittiv...

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  11. Photon is quantum of radiation with energy E= hv where v is frequency ...

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  12. If Plank's constant (h) and speed of light in vacuum (c) are taken as ...

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  13. Name of units of some physical quantities are given in List - 1 and th...

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  14. Match the following : {:("List - 1","List - 2"),((a) "second" ,(e) "...

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  15. Name of units of some physical quantities are given in List - 1 and th...

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  16. Match the list - I with list - II {:("List - I","List - II"),((A) "B...

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  17. Dimensional formula for thermal conductivity.

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  18. Force is given by the expression F = A cos (Bx) + C cos (Dt), where x ...

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  19. In the following 'I' refers to current and other sumbols have their us...

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  20. (A) If you look out of the window of a fast moving train, the nearby t...

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