Physics
Fluid-Mechanics
Easy
Question
When a drop of water is dropped on oil surface, then
- It will mix up with oil
- It spreads in the form of a film
- It will deform
- It remains spherical
The correct answer is: It remains spherical
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Bernoulli's equation can be written in the following different forms (Column I). Column II lists certain units each of which pertains to one of the possible forms of the equation Match the unit associated with each of the equations.
Column I
Column II
(i) 
constant
(a) Total energy per unit mass
(ii) 
constant
(b) Total energy per unit weight
(iii) 
constant
(c) Total energy per unit volume
|
Column I |
Column II |
| (i) constant |
(a) Total energy per unit mass |
| (ii) constant |
(b) Total energy per unit weight |
| (iii) constant |
(c) Total energy per unit volume |
Bernoulli's equation can be written in the following different forms (Column I). Column II lists certain units each of which pertains to one of the possible forms of the equation Match the unit associated with each of the equations.
Column I
Column II
(i) constant
(a) Total energy per unit mass
(ii) constant
(b) Total energy per unit weight
(iii) constant
(c) Total energy per unit volume
|
Column I |
Column II |
| (i) constant |
(a) Total energy per unit mass |
| (ii) constant |
(b) Total energy per unit weight |
| (iii) constant |
(c) Total energy per unit volume |
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A cylinder of weight W is floating in two liquids as shown in figure. Net force on cylinder from top is F1 and force on cylinder from the bottom is F2. Match the following two columns.
Column I
Column II
(i) Net force on cylinder liquid -1
(a) Zero
(ii) 
(b) W
(iii) Net force on cylinder from liquid -2
(c) Net upthrust
(iv) Net force on cylinder from atmosphere
(d) None of these
|
Column I |
Column II |
| (i) Net force on cylinder liquid -1 |
(a) Zero |
| (ii) |
(b) W |
| (iii) Net force on cylinder from liquid -2 |
(c) Net upthrust |
| (iv) Net force on cylinder from atmosphere |
(d) None of these |
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Column I
Column II
(i) Net force on cylinder liquid -1
(a) Zero
(ii)
(b) W
(iii) Net force on cylinder from liquid -2
(c) Net upthrust
(iv) Net force on cylinder from atmosphere
(d) None of these
|
Column I |
Column II |
| (i) Net force on cylinder liquid -1 |
(a) Zero |
| (ii) |
(b) W |
| (iii) Net force on cylinder from liquid -2 |
(c) Net upthrust |
| (iv) Net force on cylinder from atmosphere |
(d) None of these |
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If a liquid enters a section of tube of radius 5 cm with a velocity l6 ms-1, the velocity with which it leaves another section of the tube of radius 4 cm (assuming the tube horizontal)
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