A particle is moving along x-axis with 4 m/sec in-front of plane mirror, which is moving along negative direction with 2 m/sec. speed of image with respect to ground will be

V→O/m=−V→I/mV→O/m=V→O/g−V→m/g=4+2= 6 m/sec V→I/m=V→I/g−V→m/g−6=V→I/g−(−2)V→I/g=−8m/sec (negative sign shows its velocity along negative x-axis) So, correct answer will be (c).