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IIT JEE Advanced 2006 Paper 1

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Question : 10

Total: 120

A student performs an experiment for determination of g (=

) , l = 1 m, and he commits an error of Δl. For T, he takes the time of n oscillations with the stop watch of least count ΔT and he commits a human error of 0.1 s. For which of the following data, the measurement of g will be most accurate?

Δl = 5 mm; ΔT = 0.2 s; n = 10; A = 5 mm.
Δl = 5 mm; ΔT = 0.2 s; n = 20; A = 5 mm.
Δl = 5 mm; ΔT = 0.1 s; n = 20; A = 1 mm.
Δl = 1 mm; ΔT = 0.1 s; n = 50; A = 1 mm.

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