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

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

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

A kid of height 1.1 ft is sleeping straight between focus and centre of curvature along the principal axis of a concave mirror of small aperture. His head is towards the mirror and is 0.5 ft from the focus of the mirror. How a plane mirror should be placed so that the image formed by it due to reflected light from concave mirror looks like a person of height 5.5 ft standing vertically. Draw the ray diagram. Find the focal length of the concave mirror.

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 always forms a real image. (T/F)

Statement-1 : A dentist uses a concave mirror to examine a small cavity. Statement-2 : A dentist uses a concave mirror so as to form a magnified, virtual image of an object.

An object is kept at the centre of curvature of a concave mirror. The position and nature of the image formed is