Find the position, size and the nature of the image formed by a spherical mirror from the following data.
`u=-20 cm,f= -15 cm, h_o =1.0 cm`

A concave mirror of focal length 10cm and a convex mirror of focal length 15cm are placed facing each other 40cm apart. A point object is placed between the mirrors, on their common axis and 15cm from the concave mirror. Find the position and nature of the image produced by successive reflections, first at the concave mirror and then at the convex mirror.

An object is placed 21 cm in fron of a concave mirror of radis of curvature 20 cm.A glass slab of thicknes 3 cm and refractive index 1.5 is palced close to the mirror in the space between the object and the mirror. Find the position of the final image fromed. The distance of the nearer surface of the slab from the mirror is 10 cm.

Diameter of spherical mirror is 10 cm, what will be aperture of mirror ?

A point object lies 30 cm above water on the axis of a convex mirror of focal length 40 cm lying 20 cm below water surface. Consider two images. (i) Image formed by the partial reflection from water surface. (ii) Image formed by refraction from water surface followed by reflection from mirror and again refraction out of the water surface. find the distance between these two images.

Aperture of a spherical mirror is 20 cm, then circumference of this spherical mirror will be

Lateral magnification of an object by spherical mirror is 0.3. If focal length of mirror is 30 cm, find type of mirror.

As shown in the figure, a thin rod AB of length 10 cm is placed on the principal axis of a concave mirror such that it.s end B is at a distance of 40 cm from the mirror. If the focal length of the mirror is 20 cm, find the length of the image of the rod

In the figure shown L is converging lens of focal length 10 cm and M is a concave mirror of radius of curvature 20 cm . A point object O is placed in front of the lens at a distance 15 cm . AB and CD are optical axes of the lens mirror respectively. Find the coordinates of the final image formed by this system taking O as origin. The distance between CD & AB is 1mm.

A concave mirror has the form of a hemisphere with a radius of R=60cm A thin layer of an unknown transparent liquid is poured into the mirror ,The mirror-liquids system forms one real Image and another real image is formed by mirror alone ,with the sources in a certain position .One of them coincides with the source and the other is at distance of l=30 cm from source.find the possible value(s) refractive index mu of the liquid.