The focal length of a concave mirror is 20 cm . Where should an object be placed to get an image magnified twice?

The focal length of a concave mirror is 12 cm . Where should an object of length 4 cm be placed so that a real image of 1 cm length is formed ?

The focal length of a concave mirror is 50cm. Where an object be placed so that its image is two times and inverted

The focal length of a concave mirror is 50cm. Where an object be placed so that its image is two times and inverted

A glass slab of thickness 3cm and refractive index 1.5 is placed in front of a concave mirror of focal length 20cm. Where should a point object be placed if it is to image on to itself?

A glass slab of thickness 3cm and refractive index 1.5 is placed in front of a concave mirror of focal length 20cm. Where should a poing object be placed if it is to image on to itself?

If focal length of the concave mirror is 20 cm, we get virtual image if the object placed at a distance……..than 20 cm

The focal length of a concave lens is 20 cm, if an object is placed at a distance of 50 cm in front of this concave lens, where is the image formed ? What is the nature of the image ?

Where should an object be placed in front of a concave mirror to get a magnified image ?

How far should an object be placed from a concave mirror of focal length 15 cm so as to get an image magnified two times?