An object is placed in front of a concave mirror of focal length 20 cm and an image of magnification -2 is formed. Find the position of the object and the image. Draw a ray diagram.

An object is placed in front of a convex lens of focal length 30 cm. An image of magnification +2 is formed on the same side of the convex lens. Find the nature and position 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.

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?

An object is placed at a distance of 30 cm from a convex lens. A real image of magnification 1.5 is formed. Find the location of the image and the focal length of the tens.

Find the position of an object which when placed in front of a concave mirror of focal length 20cm, produces a virtual image, which is twice the size of the object.

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.