Question

if we increase the temperature then ∆L will increased or decrease ? ​

Answer 1

Answer:

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Explanation:

The change in length ∆L is affected by many factors one of among them is the Temperature if we take a metal rod for example we can simply observe that with increase in temperature the stress in the rod increases which increases the length of rod dl times of previous [L] length.

similarly if we decrease the temperature it will decrease the stress in rod and further it will decrease the length of rod dl times of previous L length.

So on increasing or decreasing the temperature we get ∆L [change in length] of rod as:

∆L=L ± dl

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