8.Mechanical Properties of Solids
medium

નીચેના બધા તાર પર સમાન બળ લગાવવામાં આવે તો લંબાઈમાં મહત્તમ વધારો શેમાં થાય ?

A

$L = 500 \,cm, d = 0.05 \,mm$

B

$L = 200\, cm, d = 0.02\, mm$

C

$L = 300\, cm, d = 0.03\, mm$

D

$L = 400 \,cm, d = 0.01\, mm$

Solution

(d) $l \propto \frac{L}{{{r^2}}}$                   $(Y$ and $F$ are constant$)$

Maximum extension takes place in that wire for which the ratio of $\frac{L}{{{r^2}}}$ will be maximum.

Standard 11
Physics

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