The distance of the spherical mirror from reflection can takes place is called its
Focal length
Pole
Aperture
None of these
An imaginary line drawn perpendicular to the mirror at the point of incidence is called
Incident ray
Reflected ray
Normal
Radius of curvature, r =
f/2
2f
2/3 f
f
Army personnel and scouts use _____ for signalling
Concave
Convex
Plane
Concave mirror is used in
Solar devices
Car headlights
Dentist's mirror
All of these
An image formed by a plane mirror is a/an
Virtual image
real image
Inverted image
_________ is denoted by P.
Principle focus
Principal axis
__________ is used as shaving mirrors.
Convex mirror
Plane mirror
Concave mirror
A spherical mirror in which the outer surface is reflecting is called a ___________ mirror.
In a concave mirror, the object is at infinity then the image formed is
Infinity
At the focus
At the centre of curvature
Behind the mirror