A body which does not allow light to pass through it is called
A polisher surface
Opaque body
Transparent body
Translucent body
In concave mirror, virtual image is formed when the object is at
Centre of curvature
Between the focus and pole
Beyond the centre of curvature
At infinity
In a concave mirror, a ray parallel to the principal axis after reflection passes through the
Principal focus
Infinity
Pole of the mirror
Shaving mirror is a
Convex lens
Concave lens
Convex mirror
Concave mirror
A spherical mirror whose outer surface is the reflecting surface is called
Plane mirror
Spherical mirror
The geometric centre of a spherical mirror is known as
Principal axis
Aperture
Pole
Focus
Focal length F =
2r
Rear-view mirrors of a car is a
Bi -concave mirror
Image formed by a convex mirror is
Real, inverted and small
Virtual, erect and enlarged
Virtual, erect and diminished
Real,erect,enlarged
In a concave mirror, if the position of the object is at infinity then the image is
at focus
between focus and pole
infinity
at the centre of curvature