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If there is a positive error of 50% in ...

If there is a positive error of ` 50%` in the measurement of velocity of a body , find the error in the measurement of kinetic energy.

A

`25%`

B

`50%`

C

`100%`

D

`125%`

Text Solution

Verified by Experts

The correct Answer is:
D
Kinetic energy `E=(1)/(2)mv^2`
`(triangleE)/(E)xx100=(v^(`2)-v^2)/(v^2)xx100`
`=[(1.5)^2-1]xx100`
`(triangleE)/(E)xx100=125%`
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