A copper wire and an aluminium wire have lengths in the ratio 
, diameters in the ratio 
and forces applied in the ratio 
. Find the ratio of increase in length of the copper wire to that aluminium wire. (Let 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Ratio of length of copper wire and aluminium wire, 
And diameter ratio of the wire 
Increase in the length of copper 
…… .(i)
For aluminium wire increase in length 
…… .(ii)
From Eqs. (i) and (ii),
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