Question

This question carries 2 marks.
Class 11 cbse​

Answer 1

Answer:

Explanation:

.here's your answer in the pic

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Answer 2

Answer:

D=m/πr2l

%error in m=1.5%

%error in r=2.5%

%error in l=1.2%

Now additional system is required___

% error in d =(1.5+2*2.5+1.2)%

=7.7%