In displacement method distance of object from convex lens of focal length 20 cm in one position 60 cm. Then

An object is placed at a distance of 30 cm from a convex lens of focal length 20 cm.

An object 4 cm high is placed at a distance of 10 cm from a convex lens of focal length 20 cm. Find the position, nature and size of the image.

An object is placed at a distance of 10 cm from a convex lens of focal length 12 cm. Find the position and nature of the image.

An object is placed at a distance of 10 cm from a convex lens of focal length 12 cm. Find the position and nature of the image.

An object is placed at a distance of 12 cm from a convex lens of focal length 8 cm. Find : the position of the image

An object of height 2 cm is placed at a distance of 15 cm from a convex lens of focal length 12 cm. Find the position and size of the image.

If an object of 7 cm height is placed at a distance of 12 cm from a convex lens of focal length 8 cm, find the position, nature and height of the image.

An object is placed at a distance of 10 cm before a convex lens of focal length 20 cm. find the position and nature of the image?