A concave mirror is lying on a table with its reflecting surface facing upwards and pole touching the table. The mirror is rotated about its principal axis in clockwise direction. The image of a person looking straight into it

Q. A concave mirror is placed on a horizontal table with its axis directed vertically upwards. Let O be the pole of the mirror and C its centre of curvature. A point object is placed at C. It has a real image, also located at C. If the mirror is now filled with water, the image will be

Q. A concave mirror is placed on a horizontal table, with its axis directed vertically upwards. Let O be the pole of the mirror and C its centre of curvature. A point object is placed at C. It has a real image, also, located at C (a condition called auto-collimation). If the mirror is now filled with water, the image will be

Q. An object is located at a distance $30\text{cm}$ on the principal axis from the pole of a concave mirror of focal length $20\text{cm}$. Suddenly the mirror is displaced upwards by a distance $1.5\text{cm}$ in the direction normal to its principal axis. Calculate the displacement of the image produced by the mirror from the original axis.

Q. A concave mirror is placed inside liquid with its shining surface upwards and principal axis vertical as shown. Rays are incident parallel to the principal axis of the concave mirror. Find the angle of emergence.

Q.

Suppose two spherical mirrors with reflecting surface towards your face are lying on the table,how will you distinguish between them just by looking?