The constant forces are applied in opposite directions on upper and lower faces of a cube of side 14 cm, shifting the upper face parallel to itself by 0.3 cm. If the sides of the cube were 28 cm, then it displacement will be

Options

A. 0.05 cm
B. 0.60 cm
C. 0.15 cm
D. 0.35 cm

Answer

C

Explanation

`eta=(Fh_(1))/(A_(1)x_(1)) and eta =(Fh_(2))/(A_(2)x_(2))`
`(x_(2))/(x_(1))=(h_(1))/(h_(2)) xx (A_(2))/(A_(1))`