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Byju's Answer
Standard XII
Mathematics
Rate of Change
If K. E. body...
Question
If K. E. body is increased by
100
%
. Then % change in
P
is
A
50
%
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B
41.4
%
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C
10
%
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D
20
%
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Solution
The correct option is
A
41.4
%
We know
K
.
E
(
s
a
y
k
)
=
p
2
2
m
After Increasing K.E
2
k
=
p
2
2
2
m
⇒
p
2
=
√
2
p
Change in P
=
√
2
p
−
p
=
0.414
p
So. Percentage change in P =
41.4
%
Therefore, B is correct option.
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