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Q.

In the measurement of mass and speed, the percentage errors are 2% and 3% respectively. From the obtained mass and speed, find the maximum error in the estimation of the kinetic energy.

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a

11% 

b

5% 

c

1%

d

8% 

answer is B.

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Detailed Solution

Kinetic energy is given as

KE=12mv2

So, percentage error in kinetic energy will be given as

% error in mass + 2 x % error in velocity

= 2 + 2 x 3 = 8 %

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