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1.The acceleration due to gravity is measured on thesurface of earth by using a simple pendulum. If aand β are relative errors in the measurement oflength and time period respectively, thenpercentage error in the measurement ofacceleration due to gravity is(1)|α+β|x100(2) (u-26)2(3) (2a + β)s 100(4) (e+ 2B)100

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