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Byju's Answer
Standard XII
Physics
Projectile Time, Height and Range
Reflection of...
Question
Reflection of the point
(
α
,
β
,
γ
)
in
X
Y
plane is
A
(
α
,
β
,
0
)
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B
(
0
,
0
,
γ
)
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C
(
−
α
,
−
β
,
γ
)
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D
(
α
,
β
,
−
γ
)
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Solution
The correct option is
D
(
α
,
β
,
−
γ
)
The image of of any point
(
x
1
,
x
2
,
x
3
)
about the planes
X
Y
,
Y
Z
,
&
Z
X
is
(
x
1
,
x
2
,
−
x
3
)
,
(
−
x
1
,
x
2
,
x
3
)
&
(
x
1
,
−
x
2
,
x
3
)
So,the image of
(
α
,
β
,
−
γ
)
in
X
Y
plane is
(
α
,
β
,
−
γ
)
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4
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