Image of an Extended Object in Plane Mirror

Q. When a plane mirror is placed horizontally on level ground at a distance of $60\text{m}$ from the foot of a tower, the top of the tower and its image in the mirror subtends an angle of ${90}^{\circ }$ at the corner of the mirror nearer to the foot of tower. The height of the tower is

1. $30\text{m}$
2. $60\text{m}$
3. $90\text{m}$
4. $120\text{m}$

Q. A plane mirror is used to form an image of a real object. Identify the wrong statement.

1. The image is diminished.
2. The image is erect.
3. Image is at the same distance from mirror as that of object.
4. The image is virtual.

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. $80\text{cm}$