2.Fill in the blanks
a) Objects which emit their own light are known as _______
b)______ objects form no shadow.
c) The property of light travelling in a straight line is referred to as ______
d) Light is a form of _____ which gives us the sensation of sight.
e) The bouncing of light from surface is called _____ of light
f) A pinhole camera is based on the principle of ______ of light .
g) The sun is a _______ object whereas the moon is a ________
object.
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a. stars
b. ?
c. rectilinear propagation of light
d. ?
e. reflection
f. reflection
g. ?
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Answer :
Fill in the blanks :
a) Objects which emit their own light are known as ________ .
- Objects which emit their own light are known as luminous objects .
b) ______ objects form no shadow.
- Transparent objects form no shadow.
c) The property of light travelling in a straight line is referred to as ______
- The property of light travelling in a straight line is referred to as rectilinear propagation of light .
d) Light is a form of _____ which gives us the sensation of sight.
- Light is a form of energy which gives us the sensation of sight.
e) The bouncing of light from surface is called _____ of light
- The bouncing of light from surface is called reflection of light .
f) A pinhole camera is based on the principle of ______ of light .
- A pin hole camera is based on the principle of rectilinear propagation of light .
g) The sun is a _______ object whereas the moon is a ________ object.
- The sun is a luminous object whereas the moon is a non-luminous object.
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