If the ratio of lengths, radii and Young’s modulus of steel and brass wires shown in the figure are 
and 
, respectively. The ratio between the increase in lengths of brass and steel wires would be
a)
b)
c)
d)
If the ratio of lengths, radii and Young’s modulus of steel and brass wires shown in the figure are and , respectively. The ratio between the increase in lengths of brass and steel wires would be
a)
b)
c)
d)
Question ID - 56319 | SaraNextGen Top Answer
If the ratio of lengths, radii and Young’s modulus of steel and brass wires shown in the figure are and , respectively. The ratio between the increase in lengths of brass and steel wires would be
a)
b)
c)
d)
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If the ratio of lengths, radii and Young’s modulus of steel and brass wires shown in the figure are
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a) |
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b) |
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c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (d) -
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(d) Given,
Let Young’s modulus of steel be
and Dividing Equation (i) by Equation (ii), we get
Force on steel wire from free body diagram
Force on brass wire from free body diagram
Now, putting the value of
|
, and that of brass be 
…(i)
…(ii)
…(iii)
Newton
Newton
in Equation (iii), we get
127 votes
Answer Link
127