In an experiment to measure the height of bridge

Asked by admin @ in Physics viewed by 290 People

31. In an experiment to measure the height of bridge by dropping stone into water underneath,

if the error in measurement of time is 0.1S, at the end of 2 S, then the error in the estimationof height of bridge will be(a) 0.49 m(b) 0.98 m(c) 1.96 m(d) 2.12 m​

Answered by admin @


Explanation:

Answer

21gt2=H

differentiation 

21×g×(2t)×dt=dH

gtdt=dH

dt= error in time

dx=cross in H

9.8×2×101=dH

1.96=dH


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