An object is placed at distance of `60cm` from a convex lens of focal length `20cm` .If it's image is formed at `10times Ncm` from the lens, then the value of `N` is

An object is placed at a distance of 12 cm from a convex lens of focal length 8 cm. Find : 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 is placed at a distance 20 cm from the pole of a convex mirror of focal length 20 cm. The image is produced at

An object is placed at a distance 24 cm in front of a convex lens of focal length 8 cm. Calculate the distance of the image from the lens.

An object is put at a distance of 5cm from the first focus of a convex lens of focal length 10cm. If a real image is formed, its distance from the lens will be

A point object O is placed at a distance of 20 cm from a convex lens of focal length 10 cm as shown in the figure. At what distance x from the lens should a convex mirror of focal length 60 cm, be placed so that final image coincide with the object?

A point object O is placed at a distance of 20 cm from a convex lens of focal length 10 cm as shown in figure. At what distance x from the lens should a concave mirror of focal length 60 cm, placed so that final image coincides with the object ?

A luminous object is placed at a distance of 30 cm. from the convex lens of focal length 20 cm. On the other side of the lens, at what distance from the lens, a convex mirror of radius of curvature 10 cm. be placed in order to have an upright image of the object coincident with it ?

An object is placed at 20 cm from a convex mirror of focal length 10 cm. The image formed by a mirror is

A point object O is placed at a distance of 15 cm from a convex lens L of focal length 10 cm as shown in figure below. On the other side of the lens, a convex mirror M is placed such that its distance from the lens is equal to the focal length of the lens. The final image formed by this combination is observed to coincide with the object 0. Find the focal length of the convex mirror.