An object is placed at a distance of 36 cm from a convex lens of focal length 12 cm. Find the position, nature and magnification of the image. Also, draw a ray diagram.

An object is placed at a distance of 10 cm from a convex lens of focal length 15 cm. Find the position, nature and magnification of the image. Also, draw a ray diagram.

An object is placed at a distance of 30cm from a concave mirror of focal length 20 cm. Find the position, nature and the magnification of the image. Draw a ray diagram.

An object of height 5 cm is placed at a distance of 30 cm from a positive lens whose focal length is 12 cm. Find the position, nature and the size of the image formed. Also, draw a ray diagram.

An object is placed at a distance of 10cm from a convex mirror of focal length 15cm. Find the position and nature of the image.

An object is placed at a distance of 50 cm from a concave lens of focal length 20 cm. Find the nature and position of the image.

An object is placed 30cm away from a concave lens of focal length 15cm. Find the position, size and nature of the image.

Find the power of a convex lens of focal length 25 cm.

An object is kept at 0.2 m from a convex lens of focal length 0.15 m. Find the position of the image formed.

A man used a concave lens of focal length 20cm.Find the power of the lens.