A diverging mirror is
a plane mirror
a convex mirror
a concave mirror
a shaving mirror
The image formed by a plane mirror is
virtual, behind the mirror and enlarged
virtual, behind the mirror and of the same size as the object
real, at the surface of the mirror and enlarged
real, behind the mirror and of the same size as the object
The image formed by a concave mirror is seen to be virtual, erect and larger than the object. The position of object must then be
between focal length and twice the focal length
far off (many times the focal length)
close to concave mirror (at less than focal length)
greater than twice the focal length
Which of the following would you prefer to use while reading small letters found in a dictionary?
a concave lens
a convex lens
The splitting up of white light into seven colours on passing through a glass prism is called
refraction
deflection
dispersion
scattering
A convex lens has a focal length of 10cm. At which of the following distance should an object be placed in front of this convex lens so that it may act as a magnifying glass?
15cm
7cm
20cm
25 cm
Which of the following always diverge light rays?
convex mirror and plane mirror
concave mirror and convex mirror
concave lens and concave mirror
concave lens and convex mirror
A virtual image larger than the object can be produced by a
concave lens
concave mirror
convex mirror
plane mirror
Whatever be the position of the object, the image formed by a mirror is virtual, erect and smaller than the object. The mirror then must be
convex
concave
plane
either concave or convex
A concave mirror cannot be used as
a magnifying mirror
a torch reflector
a dentist's mirror
a rear view mirror
