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1. |
A student uses a simple pendulum of exactly 1m length to determine g, the acceleration due to gravity. He uses a stop watch with the least count of 1 sec for 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% |
Answer» D. Percentage error in the determination of g is 2.5% | |