Which of the following would you prefer to use while reading small letters found in a dictionary?
a concave mirror
a concave lens
a convex mirror
a convex lens
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
A concave mirror has a focal length of 10cm. At which of the following distance should an object be place so that it may form virtual, erect and magnified image?
12cm
25cm
8cm
15cm
The splitting up of white light into seven colours on passing through a glass prism is called
refraction
deflection
dispersion
scattering
The mirror which can form a magnified image of an object is
convex mirror
plane mirror
concave mirror
both convex and concave mirrors
Which of the following mirror can form a real image of an object?
convex
concave
plane
either convex or concave
A diverging mirror is
a plane mirror
a shaving 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
either concave or convex
In a convex spherical mirror, reflection of light takes place at
a flat surface
a bent in surface
a bulging out surface
an uneven surface
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