A concave mirror of small aperture forms a shaper image. Why?

A concave mirror of focal length 0.15 m forms an in image doubled of the linear dimension of the object. If the image is virtual then the object distance—

What is spherical aberration ? How is the image affected in a concave mirror of large aperture? How does a paraboloidal mirror function ?

A concave mirror of focal length 15 cm forms an image twice the size of the object. If the image is virtual, the distance of object is

Two concave mirrors have same aperture but different focal lenghts. Both form image of the sun on a screen. For which image formation will the tempertaure of the screen be higher ?

A concave mirror forms an erect and there times magnified image on the axis of the mirror at a distance of 32 cm from the object. What is the focal length of the mirror?

An object is placed at a distance of 60 cm in front of a concave mirror of focal length 30 cm. Where will the image be formed? If the object apporoaches d cm towards the mirror, then how far will the image be shifted?

An object is placed perpendicularly on the principal axis of a concave mirror of focal length 25 cm and an image is formed at a distance of 100 cm in front of the mirror. Determine the position of the object and mangnification of the image.

Statement I : A concave mirror is preferred to a plane mirror for shaving. Statement II : When a man keep face between pole and focus of mirror, an erect and highly magnified virtual image is formed.

An object is placed at a distance of x form a concave mirror of radius of curvature r. prove that its image distance will be v=(rx)/(2x-r)*