When an object of height 4 cm is placed in front of a concave mirror an image of height 8 cm is for - med. Find the magnification.

An object of height 3 cm is placed in front of a convex lens of focal length 20 cm at a distance of 30 cm. What is the distance to the image formed ?

An object is placed 8 cm away in front of a concave mirror of focal length 5 cm. Find out the position of image and magnification. Find out whether the image is inverted or erect by drawing the ray diagram on a graph paper.

An object of height 3 cm is placed in front of a convex lens of focal length 20 cm at a distance of 30 cm. What is the height of the image ?

An object of height 3 cm is placed in front of a convex lens of focal length 20 cm at a distance of 30 cm. What is the nature of the image?

When an object was kept in front of a concave mirror , its real image was formed in the same place in the same size. If the distance of the object was 20 cm away from the mirror, what would be the distance of the focus of the mirror.

When an object of height 3 cm is placed at a distance of 30 cm from a lens, a real image is formed at a distance of 60 cm. Find out the height of the image.

When an object is placed infront of a spherical mirror at a distance 30 cm, the magnification is -1. If the object is placed at 10 cm. What changes occur-to the properties of the image?

When an object is placed infront of a spherical mirror at a distance 30 cm, the magnification is -1. Write down the properties of the image?