Image of an Extended Object in Plane Mirror

Q. A cubical room is made by placing $6$ identical plane mirrors with the reflecting surface on the inside of the room. An insect crawls along the diagonal of the floor with constant speed of $40\text{cm/sec}$. What is the magnitude of velocity of image of insect w.r.t insect in one of the two adjacent walls?

1. $20\sqrt{2}\text{cm/s}$
2. $40\sqrt{2}\text{cm/s}$
3. $\frac{20}{\sqrt{2}}\text{cm/s}$
4. $20\text{cm/s}$

Q. A small object is placed $10\text{cm}$ in front of a plane mirror. If you stand behind the object $30\text{cm}$ from the mirror and look at its image, the distance between the observer and the image of the object will be

1. $60\text{cm}$
2. $20\text{cm}$
3. $40\text{cm}$
4. $80\text{cm}$