A converging mirror forms real image of object AB on screen. Now a hole is made on mirror just in front of point B, select incorrect options:

A concave mirror forms the image of an object on a screen. If the lower half of the mirror is covered with an opaque card, the effect would be

A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find position of image.

A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find the focal length of mirror.

A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find a. the focal length of mirror b. position of image.