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The length of a rubber cord is metre when the tension is 4 N and  metre when the tension is 6N. The length when the tension is 9 N, is

a)

b)

c)

d)



Question ID - 56279 | SaraNextGen Top Answer

The length of a rubber cord is metre when the tension is 4 N and  metre when the tension is 6N. The length when the tension is 9 N, is

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (a) -

(a)

Let the original unstretched length be

Now,      

Again, 

?

Solving Eqs. (i) and (ii), we obtain

127 votes


127