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Shreya Choudhary
Subject: Physics
, asked on 30/3/18
Solve this:
Q.29. One thousand small spherical drops of equal radii combine to form a big spherical drop. The ratio of final surface energy to total initial surface energy is
(1) 1000 : 1
(2) 1 : 1000
(3) 10 : 1
(4) 1 : 10
Answer
1
Varun Gupta
Subject: Physics
, asked on 28/3/18
A particle executes shm along x-axis about the centre at x=-a with frequency f. Initially the particle is at rest at origin. What is its equation of motion?
Answer
1
Shreya Kaushik
Subject: Physics
, asked on 28/3/18
Q A jar is filled with two non mixing liquids 1 and 2 having densities
ρ
1
and
ρ
2
, respectively.
A solid ball made of a material made of density
ρ
3
is dropped in the jar . It comes to equilibrium in the position shown in the fig. Which of the following is true for
ρ
1
,
ρ
2
,
ρ
3
1
)
ρ
3
<
ρ
2
<
ρ
1
2
)
ρ
1
>
ρ
3
>
ρ
2
3
)
ρ
1
<
ρ
2
<
ρ
3
4
)
ρ
1
<
ρ
3
<
ρ
2
Answer
3
Varun Gupta
Subject: Physics
, asked on 25/3/18
Q9
Answer
1
Varun Gupta
Subject: Physics
, asked on 25/3/18
Q8
Answer
1
Varun Gupta
Subject: Physics
, asked on 25/3/18
Solve this:
Answer
4
Varun Gupta
Subject: Physics
, asked on 25/3/18
According to Bernoulli's theorem the pressure of water should remain uniform in a pipe of uniform radius. But, actually it goes on decreasing why is it so?
Answer
1
Varun Gupta
Subject: Physics
, asked on 25/3/18
In case of liquids, what does the term streamline refer to? Hiw does it differ from a tube of flow?
Answer
2
Varun Gupta
Subject: Physics
, asked on 25/3/18
How does the property of capillarity govern the need of ploughing farm fields?
Answer
2
Varun Gupta
Subject: Physics
, asked on 25/3/18
A soap bubble is blown to a diameter of 7 cm. If 36960 erg of work is done in blowing it further, find the new radius. The surface tension of soap solution is 40 dyne/cm.
Answer
1
Varun Gupta
Subject: Physics
, asked on 25/3/18
Please solve
Answer
1
Varun Gupta
Subject: Physics
, asked on 25/3/18
Water is pumped steadily out of a flooded basement at a speed of 5.0 m/s through a uniform hose of radius 1.0 cm. The hose passes out through a window 3.0 m above the waterline. What is the power of the pump?
Answer
1
Divya Mahesh
Subject: Physics
, asked on 25/3/18
Give reason.
Answer
1
Divya Mahesh
Subject: Physics
, asked on 25/3/18
Solve this:
Q. A hollow spherical object weighs 25 g in air, material density is 5 g/cc. If it weighs 15 g in water find the volume of the hollow space in it.
(1) 5 cc (2) 10 cc
(3) 15 cc (3) 20 cc
Answer
1
Divya Mahesh
Subject: Physics
, asked on 25/3/18
71. A hydrometer floats with half of its stem outside water surface. It is now placed in alcohol (R.D = 0.8). The hydrometer floats
1. With stem at the same position
2. With more stem inside the alcohol
3. With more stem outside alcohol
4. In lifted position
Answer
1
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What are you looking for?
Q.29. One thousand small spherical drops of equal radii combine to form a big spherical drop. The ratio of final surface energy to total initial surface energy is
(1) 1000 : 1
(2) 1 : 1000
(3) 10 : 1
(4) 1 : 10
A solid ball made of a material made of density is dropped in the jar . It comes to equilibrium in the position shown in the fig. Which of the following is true for ,,
Q. A hollow spherical object weighs 25 g in air, material density is 5 g/cc. If it weighs 15 g in water find the volume of the hollow space in it.
(1) 5 cc (2) 10 cc
(3) 15 cc (3) 20 cc
1. With stem at the same position
2. With more stem inside the alcohol
3. With more stem outside alcohol
4. In lifted position