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(#M40027892) IIT-JEE question 2010 question Keep an EYE

A student uses a simple pendulum of exactly 1 m length to determine g, the acceleration due to gravity. He
uses a stop watch with the least count of 1 second fore this and records 40 seconds for 20 oscillations. For
this observation, which of the following statement(s) is (are) true ?
(A) error ΔT in measuring T, the time period, is 0.05 seconds
(B) error ΔT in measuring T, the time period, is 1 second
(C) percentage error in the determination of g is 5%
(D) percentage error in the determination of g is 2.5%.

Asked In IIT-JEE MAN (12 years ago)

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