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If the units of length and force are inc...

If the units of length and force are increased by four times the unit of energy will be incresed by

A

is increased by 4 times

B

is increased by 16 times

C

is increased by 8 times

D

remains unchanged

Text Solution

Verified by Experts

The correct Answer is:
B
`"The work done "="force"xx"displacement"`
`therefore" unit, "u_(1)=Fs`
`and u_(2)=4Fxx4s=16u`.
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DISHA PUBLICATION-PHYSICAL WORLD, UNITS AND MEASUREMENTS-Exercise - 1 : Concept Builder (Topicwise)(Topic 1 : Units of Physical Quantities)
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  4. The S.I. unit of latent heat is

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  5. The unit of self inductance of a coil is

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  6. The surface tension of a liquid is 70 "dyne" // cm . In MKS system its...

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  7. Joule-second is the unit of

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  8. The SI unit of Stefan's constant is :

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  9. S.I. unit of universal gas constant is

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  10. Young's modulus of steel is 1.9xx10^(11) N//m^2 When expressed is CGS ...

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  11. Which one of the following pairs of quantities and their units is a pr...

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  12. The numerical value of Young's modulus in S.I. unit is beta. what is i...

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  13. If the units of length and force are increased by four times the unit...

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  14. the density of a material is 8 g/cc. In a system in which units of len...

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  15. If e is the charge, V the potential difference, T the temperature, the...

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  16. In equation, r=m^(2)sin pit, where t represent time if the unit of m i...

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  17. If x=at+bt^(2), where x is the distance travelled by the body in kilom...

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  18. Which of the following quantities has not been expressed in proper uni...

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  19. In the eqn. (p+(a)/(V^(2)))(V-b)= "constant" constant, the unit of a...

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  20. In CGS system the magnitude of the force is 100 dyne.In another system...

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