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Question
The slenderness ratio of a column is zero when its
fdlh LrEHk dk {kh.krk vuqikr 'kwU; gksrk gS
A.
effective length is equal to actual length
B.
length is very large
C.
length is equal to its radius of gyration
D.
None of these
Answer ( Option D)

None of these

Solution

Slenderness ratio: Ratio of effective length of its radius of gyration is known as slenderness ratio.
Slenderness ratio of column is zero when its length is supported on all side throughout its full length.
Note: Radius of Gyration (r) : It is the distance at which entire area must be kept as a strip so that it will give same moment of inertia as that of original area.
where A = Area of the cross section
I = Moment of inertia

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