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Subjects
Science State Board
Class 7
Light
Textbook questions
20.
Answer the following questions in short V
Exercise condition:
4
m.
1. What is plane mirror?
a
. A Plane mirror has a reflective surface that is
flat
curved
.
b
. Reflection takes place when the object is placed
infront of
behind
the mirror.
2. What is prism?
a
. Prism is made up of
clay
glass
.
b
. Prism has two
rectangular
triangular
faces.
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