Two forces `F_1` and `F_2` act on a thin uniform elastic rod placed in space. Force `F_1` acts at right end of rod and `F_2` acts exactly at centre of rod as shown (both forces act parallel to length of the rod).

`(i) F_(1)` causes extension of rod while `F_(2)` causes compression of rod.
(ii) `F_(1)` causes extension of rod and `F_(2)` also causes extension of rod.
(iii) `F_(1)` causes extension of rod while `F_(2)` does not change total length of rod.
The correct order of True/False in above statements is

Options

A. TFF
B. FTF
C. FFT
D. FFF

Explanation

The force `F_(1)` causes extension in rod. `F_(2)` causes compression in left of rod and an equal extension in right half of rod. Hence `F_(2)` does not effectively change length of the rod.