Question

The length of a rod seems shorter to an

observer when it moves in a specific direction.

What change would he observe when the

direction of rod changes by 180o

?

a) The rod becomes even smaller

b) The length of the rod increases

c) The length of the rod remains the same

d) The rod has the length equal to its proper

length​

Answer 1

Answer:

I think it is 'C or D'

Explanation:

As we know, by Lorentz contraction, l = l0\sqrt{1-\frac{v^2}{c^2}}.

Answer 2

Answer:

The correct answer is C) The length of the rod remains the same.

Explanation:

From the above question,

They have given :

The length of a rod seems shorter to an observer when it moves in a specific direction. What change would he observe when the direction of rod changes by 180o?

a) The rod becomes even smaller

b) The length of the rod increases

c) The length of the rod remains the same

d) The rod has the length equal to its proper length

     The observer will not observe any change to the length of the rod. This is because the length of the rod remains the same regardless of the direction it is moving in.

The observer will only observe an apparent change in the length of the rod if it is moving in a certain direction. This is due to the fact that the angle at which the rod is viewed can cause an illusion of a shorter or longer length.

Therefore,

        when the direction of the rod changes by $180^{0}$, the observer will not observe any changes to the length of the rod. The rod will remain the same length as it was before the direction changed. This is because the angle at which the rod is viewed will remain the same regardless of the direction it is moving in. Therefore, the observer will not observe any changes to the length of the rod when the direction changes by $180^{0}$.

When the direction of a rod changes by $180^{0}$, the observer will not observe any changes to the length of the rod. This is because the length of the rod remains the same regardless of the direction it is moving in.

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