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KEAM 2021 Physics and Chemistry Solved Paper
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© examsnet.com
Question : 39
Total: 120
If the percentage errors in the measurements of mass, length and time are
1
%
,
2
%
and
3
%
respectively, then the maximum permissible error in the measurement of the acceleration of a particle is
8
%
9
%
6
%
10
%
2
%
Validate
Solution:
Given,
%
error in mass
=
1
%
%
error in length
=
2
%
%
error in time
=
3
%
Acceleration of the particle,
a
=
v
t
=
d
x
(
d
t
)
t
%
error in
a
is,
∆
a
a
×
100
=
∆
x
x
×
100
+
2
×
∆
t
t
=
2
%
+
2
×
3
%
=
(
2
+
6
)
%
=
8
%
© examsnet.com
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