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IUT_08-09
HSC - উচ্চতর গণিত ২য় পত্র
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অধ্যায়-০৯ঃ সরলরেখায় বা সমতলে চলমান কণার গতি
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A man, who swims at a speed of
5
m
/
s
in still water, wishes to cross a river of breadth
20
m
flowing at a
\text { A man, who swims at a speed of } 5 \mathrm{~m} / \mathrm{s} \text { in still water, wishes to cross a river of breadth } 20 \mathrm{~m} \text { flowing at a }
A man, who swims at a speed of
5
m
/
s
in still water, wishes to cross a river of breadth
20
m
flowing at a
speed of
3
m
/
s
. The time taken by the man to cross the river is-
\text { speed of } 3 \mathrm{~m} / \mathrm{s} \text {. The time taken by the man to cross the river is- }
speed of
3
m
/
s
. The time taken by the man to cross the river is-
A.
8
s
e
c
8 \mathrm{sec}
8
sec
B.
6
s
e
c
6 \mathrm{sec}
6
sec
C.
5
s
e
c
5 \mathrm{sec}
5
sec
D.
4
s
e
c
4 \mathrm{sec}
4
sec
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