Question

If an object reaches the speed of light, it’s

length changes to ___________

a) Infinite

b) Double of the value

c) Half of the value

d) Zero​

Answer 1

Answer:

d) Zero is the right answer.

Answer 2

Question:-

If an object reaches the speed of light, it’s

length changes to

Answer

D) Zero

Explanation:-

$\sf{We know, l = l0\sqrt{1-\frac{v^2}{c^2}}.} \\ \sf{Thus, \: as \: v \: tends \: to \: c, } \\ \sf{ the length \: of \: the \: rod }\\ \sf{ in \: motion \: reduces \: to \: zero, }\\ \sf{which \: is \: physically \: impossible.}$

Hope it helps