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How many times the unit of energy is af...

How many times the unit of energy is affected when units of force and length are doubled ?

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The unit of energy becomes 4 times. This is
because energy = work = force `xx` distance.
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PRADEEP-PHYSICAL WORLD AND MEASUREMENT-Very short Answer Questions
  1. Name the physical quantites having dimensions [M^1 L^2 T^(-2)].

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  2. Name two physical quantities which have dimesion [M^1L^(-1)T^(-2)].

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  3. How many times the unit of energy is affected when units of force and...

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  4. What are the dimensions of rate of flow?

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  5. Give two examples of non dimensional veriables.

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  6. Name any three dimensional constants.

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  7. Name any two non dimensional constant.

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  8. The dimensional forumal of Hubble constant. Is same as that of frequen...

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  9. Can there be a physical quantity which has no units and no dimensions.

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  10. What is the dimension of time in power ?

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  11. All constants are dimensionless. Comment.

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  12. If 'slap' times speed equals power, what is the dimensional formula fo...

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  13. Can a quantity have units, but still be dimansionless?

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  14. Does a quantity have different dimensions in different systems of unit...

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  15. What are the dimensions of rate of flow?

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  16. What are the dimensions of linear mass density ?

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  17. What type of quantity is Avogadro's number ?

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  18. What are the dimensions of a and b in the relation F = at + b x, whrer...

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  19. Calculate x in the equation : (velocity)^x = (pressire diff.)^(3//2)xx...

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  20. The dimensions of Boltzmann constant are the same as that of (i) press...

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