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Standard XII
Physics
Question
The co-ordinates of a moving particle at any time
t
are given by
x
=
α
t
3
and
y
=
β
t
3
. The speed to the particle at time
t
is given by
3
t
√
α
2
+
β
2
3
t
2
√
α
2
+
β
2
t
2
√
α
2
+
β
2
√
α
2
+
β
2
A
3
t
√
α
2
+
β
2
B
t
2
√
α
2
+
β
2
C
√
α
2
+
β
2
D
3
t
2
√
α
2
+
β
2
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Solution
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Similar Questions
Q1
If the circles
(
x
+
a
)
2
+
(
y
+
b
)
2
=
a
2
,
(
x
+
α
)
2
+
(
y
+
β
)
2
=
β
2
cut orthogonally then
α
2
+
b
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=
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Q2
If
α
and
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f
(
x
)
=
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x
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+
b
x
+
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, then evaluate :
α
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β
2
+
β
2
α
2
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Q3
The angle between the tangents from
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)
to the circle
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2
=
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Q4
If variable parameter
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and satisfy the relations
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+
2
β
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+
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α
=
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+
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and
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+
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β
2
=
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2
+
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Q5
If α and β are the zeroes of the polynomial kx
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+ 3x + 2 such that
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2
+
β
2
+
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β
=
-
1
25
, find the value of k.
[Hint:
α
2
+
β
2
+
α
β
=
α
+
β
2
-
α
β
]
View Solution