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Byju's Answer
Standard XII
Physics
Angular Momentum
The velocity ...
Question
The velocity of projection of a projectile is given by :
→
u
=
5
^
i
+
10
^
j
. Time of flight is :
A
1
s
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B
2
s
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C
3
s
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D
4
s
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Solution
The correct option is
B
2
s
We have
u
y
=
u
s
i
n
θ
=
10
Time of flight
=
2
u
s
i
n
θ
g
=
2
u
y
g
=
2
×
10
10
=
2
s
Suggest Corrections
0
Similar questions
Q.
The velocity of projection of a projectile is given by :
→
u
=
5
^
i
+
10
^
j
. Range is:
Q.
The velocity of projection of a projectile is given by :
→
u
=
5
^
i
+
10
^
j
.
Find maximum height.
Q.
A body is thrown with a velocity of
20
m
s
−
1
from a building of height
15
m
. If the angle of projection is
30
∘
above the horizontal, the time of flight and the range of the projectile are respectively.
(Take
g
=
10
m
/
s
2
)
Q.
A series of orbitals are given below. Identify the sets which represent the correct order of filling up of orbitals.
(A)
3
s
,
3
p
,
3
d
,
4
s
,
4
p
(B)
4
s
,
4
p
,
5
s
,
4
d
,
5
p
,
4
f
(C)
2
s
,
2
p
,
3
s
,
3
p
,
4
s
,
3
d
,
4
p
(D)
1
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2
s
,
2
p
,
3
s
,
3
p
,
3
d
Q.
The electronic configuration of the following elements K
19
, Mn
25
, Ca
20
are given.
K
19
= 1s
2
2s
2
2p
6
3s
2
3p
6
4s
x
Mn
25
= 1s
2
2s
2
2p
6
3s
2
3p
6
3d
5
4s
y
Ca
20
= 1s
2
2s
2
2p
6
3s
2
3p
6
4s
z
The product of x, y, and z is:
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