A concave mirror gives an images three times as large as the object placed at a distance of 20 cm from it. For the images to be real, the length should be

A concave mirror gives an image three times as large as the object placed at a distance of 20 cm from it. For the image to be real, the focal length should be

A concave mirror gives an image three times as large as the object placed at a distance of 20 cm from it. For the image to be real, the focal length should be

A concave mirror gives an image three times as large as the object placed at a distance of 20 cm from it . For the image to be real , the focal length should be-

A concave mirror produces three times magnified real image of an object placed at 10 cm in front of it. Where is the image located ?

A concave mirror produces three times magnified real image of an object placed at 10 cm in front of it. Where is the image located ?

A concave mirror produces three times magnified real image of an object palced at 10 cm in front of it. Where is the image located ?