A plane mirror and an object have speeds of 5 m/s and 10 m/s respectively. If the motion of mirror and object is along the normal of the mirror then the speed of image may be

Case (i)

$\overrightarrow{V_{Om}}=5\hat{i}$

$\overrightarrow{V_{Im}}=-5\hat{i}$

$V_I=0$

Case (ii)

$\overrightarrow{V_{Om}}=-15\hat{i}$

$\overrightarrow{V_{Im}}=+15\hat{i}$

$V_I=20 m/s$

Case (iii)

$\overrightarrow{V_{Om}}=+15\hat{i}$

$\overrightarrow{V_{Im}}=-15\hat{i}$

$V_I=20 m/s$

Case (iv)

$\overrightarrow{V_{Om}}=-5\hat{i},$$\overrightarrow{V_{Im}}=+15\hat{i}$

$V_I=0 m/s$

(or)

$V_I=\left|2\overline{V_m}-\overline{V_O}\right|$

$=\left|2(\pm 5)-(\pm 10)\right|$

$=20 \left(or\right) 0 m/s$