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Aparna Sahu
Subject: Physics
, asked on 18/4/18
Solve 59
Q59. A wooden log of mass M and length L is hanged vertically down by a frictionless nail. A bullet of mass m strikes with velocity v and strikes to it. Just after the collision about the nail the angular velocity of the system will be
(a)
3
mv
3
m
+
M
L
(b)
2
mv
2
m
+
M
L
(c)
3
mv
3
m
+
2
M
L
(d)
2
mv
2
m
+
3
M
L
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 17/4/18
Please explain Answer is (1)
7.
A uniformly charge ring has charge density +
λ
and
-
λ
as shown in figure. The electric field intensity at the center of the ring is
1
λ
πε
0
R
i
^
2
λ
πε
0
R
-
i
^
3
λ
πε
0
R
-
j
^
4
λ
πε
0
R
j
^
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 17/4/18
Please explain Answer is (2)
Q.
Area of each plate is A and separation between consecutive plates is d. Emf of the battery connected is V. The charge on plate 2 is
1
A
ε
0
V
d
2
-
2
A
ε
0
V
d
3
-
A
ε
0
V
d
4
2
A
ε
0
V
d
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 17/4/18
Electric field becomes maximum are x=R/root2 How to proceed further? Ans is (3)
43.
Q charge is uniformly distributed on the ring of radius R. Find the electric potential at a point on its axis where electric field becomes, maximum.
(
1
)
Q
4
3
πε
0
R
(
2
)
Q
12
3
πε
0
R
(
3
)
Q
2
6
πε
0
R
(
4
)
Q
3
πε
0
R
Answer
1
Alok Singh
Subject: Physics
, asked on 16/4/18
Please solve this with complete explanation.
Answer
1
Laieeqa
Subject: Physics
, asked on 16/4/18
Solve this:
Answer
1
Laieeqa
Subject: Physics
, asked on 16/4/18
Solve this :
20.
A spherical shell of radius 10 cm is carrying a charge q. If the electric potential at distances 5 cm, 10 cm and 15 cm from the centre of the spherical shell is V
1
, V
2
and V
3
respectively, then
(1) V
1
> V
2
> V
3
(2) V
1
< V
2
< V
3
(3) V
1
= V
2
> V
3
(4) V
1
= V
2
< V
3
Answer
1
Laieeqa
Subject: Physics
, asked on 16/4/18
Solve this:
Q. The angle between the dipole moment and electric field at any point on the equatorial plane is
(1) 0
°
(2) 90
°
(3) 180
°
(4) 45
°
Answer
1
Laieeqa
Subject: Physics
, asked on 16/4/18
Solve this:
Q.5. The kinetic energy of a body of mass 4 kg and momentum 6 Ns will be
(1) 2.5 J
(2) 3.5 J
(3) 4.5 J
(4) 5.5 J
Answer
1
Krithikha B
Subject: Physics
, asked on 15/4/18
55. Calculate the effective capacitance between A and B in the net-work shown in Fig. 4.103.
[ Answer:- 4.67
μ
F
]
Answer
1
Krithikha B
Subject: Physics
, asked on 15/4/18
54 th one pls
Answer
1
Krithikha B
Subject: Physics
, asked on 15/4/18
Calculate the capacity between the points A and B of the combination of capacitors shown in fig. 4.100.
Answer
1
Krithikha B
Subject: Physics
, asked on 15/4/18
A capacitor c1=1.0 F charged upto 110 V is conncetd in parallel to terminals of a circiut consisting of two uncharged capacitors connected in series and possessing capactance c2=2 F cC3=3F.what charge will flow through the connecting wires
Answer
1
Riya Raheem
Subject: Physics
, asked on 15/4/18
Derive a relation between electric field and potential
Answer
1
Yashika Bhanwar
Subject: Physics
, asked on 12/4/18
A parallel plate condensor is connected with the terminals of a battery. The distance between the plates is 6mm. If a glass plate (dielectric constant K=9) of 4.5mm is introduced between them, then the capacity will be-
(a) 2 times
(b) the same
(c) 3 times
(d) 4 times
Answer
1
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What are you looking for?
Q59. A wooden log of mass M and length L is hanged vertically down by a frictionless nail. A bullet of mass m strikes with velocity v and strikes to it. Just after the collision about the nail the angular velocity of the system will be
(a) (b)
(c) (d)
7. A uniformly charge ring has charge density + and as shown in figure. The electric field intensity at the center of the ring is
Q. Area of each plate is A and separation between consecutive plates is d. Emf of the battery connected is V. The charge on plate 2 is
43. Q charge is uniformly distributed on the ring of radius R. Find the electric potential at a point on its axis where electric field becomes, maximum.
20. A spherical shell of radius 10 cm is carrying a charge q. If the electric potential at distances 5 cm, 10 cm and 15 cm from the centre of the spherical shell is V1, V2 and V3 respectively, then
(1) V1 > V2 > V3 (2) V1 < V2 < V3
(3) V1 = V2 > V3 (4) V1 = V2 < V3
Q. The angle between the dipole moment and electric field at any point on the equatorial plane is
(1) 0
(2) 90
(3) 180
(4) 45
Q.5. The kinetic energy of a body of mass 4 kg and momentum 6 Ns will be
(1) 2.5 J
(2) 3.5 J
(3) 4.5 J
(4) 5.5 J
[ Answer:- 4.67 ]
(a) 2 times
(b) the same
(c) 3 times
(d) 4 times