Font size
Worksheets7th Light
Total questions: 20
Worksheet time: 15mins
What makes it possible to see an object when looking through a periscope?
It contains mirrors that reflect the object.
It magnifies small objects so they can be seen.
It absorbs the light rays passing through it.
It separates the light into different colors.
Which surface would reflect light the best?
light coloured and smooth
dark coloured and smooth
dark coloured and rough
The path of the light is
curved
a zig-zag line
always a straight line
depends on the medium
Which one shows lateral inversion?
Convex mirror
Plane mirror
Concave mirror
All of these
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
0.25 m
1 m
0.5 m
2 m
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
concave mirror or convex mirror
concave mirror or concave lens
concave mirror or convex lens
concave lens or convex lens
An erect and enlarged image can be formed by
only a convex mirror
only a plane mirror
both convex and concave mirror
only a concave mirror
Changing of right side to left is called ………………
(a)
The inner surface of a steel spoon acts as a ………………….. mirror.
(a)
Spherical mirrors do not obey laws of reflection.
True
False
In the formation of a rainbow, what acts as tiny prisms?
Droplets of rain
clouds
sky
If the image can not be taken in the screen, it must be
real
unreal
virtual
none of these
Real images are always
erect
inverted
laterally inverted
both b and c
