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AIEEE 2004 Physics Solved Paper
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© examsnet.com
Question : 4
Total: 78
A projectile can have the same range 'R' for two angles of projection. If
T
1
and
T
2
be the time of flights in the two cases, then the product of the two time of flights is directly proportional to
R
1
R
1
R
2
R
2
Validate
Solution:
Range is same for angle of projection
θ
, and
90
∘
−
θ
T
1
=
2
u
s
i
n
θ
g
,
T
2
=
2
u
cos
θ
g
T
1
T
2
=
4
u
2
s
i
n
θ
cos
θ
g
2
=
2
g
×
(
u
2
s
i
n
2
θ
g
)
=
2
R
g
(as
R
=
u
2
s
i
n
2
θ
g
)
Hence,
T
1
T
2
is proportional to
R
.
© examsnet.com
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