The image formed by a lens is always virtual, erect and smaller
in size for an object kept at different positions in front of it.
Identify the nature of the lens.
An image formed by a lens is erect. Such an image could be
formed by a
(a) convex lens provided the image is smaller than object.
(b) concave lens provided the image is smaller than object.
(c) concave lens provided the image is larger than object.
(d) concave lens provided the image is of the same size.
You are provided with a convex mirror, a concave mirror, a
convex lens and a concave lens. You can get an inverted image
from
(a) both concave lens and convex lens.
(b) both concave mirror and convex mirror.
(c) both concave mirror and convex lens.
(d) both convex mirror and concave lens.
An erect and enlarged image can be formed by
(a) only a convex mirror.
(b) only a concave mirror.
(c) only a plane mirror.
(d) both convex and concave mirrors.
A rainbow can be seen in the sky
(a) when the sun is in front of you.
(b) when the sun is behind you.
(c) when the sun is overhead.
(d) only at the time of sun rise.
You are provided with a concave mirror, a convex mirror, a
concave lens and a convex lens. To obtain an enlarged image
of an object you can use either
(a) concave mirror or convex mirror.
(b) concave mirror or convex lens.
(c) concave mirror or concave lens.
(d) concave lens or convex lens.
If an object is placed at a distance of 0.5 m in front of a plane
mirror, the distance between the object and the image formed
by the mirror will be
(a) 2 m
(b) 1 m
(c) 0.5 m
(d) 0.25 m
Which of the following can be used to form a real image?
(a) Concave mirror only.
(b) Plane mirror only.
(c) Convex mirror only.
(d) Both concave and convex mirrors.
Boojho and Paheli were given one mirror each by their teacher.
Boojho found his image to be erect and of the same size whereas
Paheli found her image erect and smaller in size. This means
that the mirrors of Boojho and Paheli are, respectively
(a) plane mirror and concave mirror.
(b) concave mirror and convex mirror.
(c) plane mirror and convex mirror.
(d) convex mirror and plane mirror.
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