Answer :

The new length is given by,



Where, l0 = Length of rod at rest


` c = Speed of light >> v


As v << C


<1


Thus, l<l0


Consider the rod at rest and observer moves with the speed of v then the new length is given by,




Where, l0 = Length of rod at rest


` c = Speed of light >> v


As v << C


<1


Thus, l<l0


Thus, the length will be reduced in both the cases.


So, correct option is C.

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