The percentage error in the measurement of mass is 1% and speed is 2%. Error in kinetic energy is MCQ with Answer and Explanation

The percentage error in the measurement of mass is 1% and speed is 2%. Error in kinetic energy is
A. 2%
B. 5%
C. 4%
D. 6%
Answer: Option B
Solution (By JKSSB Mock Tests)
KE = ½mv², ΔKE/KE = Δm/m + 2 Δv/v = 1% + 4% = 5%.

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