Physics
Fluid-Mechanics
Easy
Question
A light cone is in equilibrium under the action of hydrostatic forces of two liquids of densities 
- 3 : 2
- 5 : 7
- 5 : 16
- 5 : 8
The correct answer is: 5 : 16
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Two cylinders of same area of cross section and together to form a cylinder of length L but made of two materials of densities d1 and d2 are connected together to from a cylinder of length 2L. The combination floats in a liquid of density d with a length L/2 above the surface of the liquid, If 
and difference in densities of two cylinders is equal to density of the liquid
Two cylinders of same area of cross section and together to form a cylinder of length L but made of two materials of densities d1 and d2 are connected together to from a cylinder of length 2L. The combination floats in a liquid of density d with a length L/2 above the surface of the liquid, If and difference in densities of two cylinders is equal to density of the liquid
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A drop of liquid of diameter 2.8 mm breaks up into 125 identical drops. The change in energy is nearly (S.T. of liquid =75 dynes/cm)
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The force required to separate two glass plates of area 
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It is easy to wash clothes in hot water because its
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It is easy to wash clothes in hot water because its
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With regard to dependence of quantities given in column I and II, match the following :
|
Column - I |
Column - II |
||
| i. |
Young's modules of a substance |
a. |
Depends on temperature |
| ii. |
Bulk modulus of substance |
b. |
Depends on length |
| iii. |
Modulus of rigidity of a substance |
c. |
Depends on area of across section |
| iv. |
Volume of a substance |
d. |
Depends on the nature of material |
With regard to dependence of quantities given in column I and II, match the following :
|
Column - I |
Column - II |
||
| i. |
Young's modules of a substance |
a. |
Depends on temperature |
| ii. |
Bulk modulus of substance |
b. |
Depends on length |
| iii. |
Modulus of rigidity of a substance |
c. |
Depends on area of across section |
| iv. |
Volume of a substance |
d. |
Depends on the nature of material |
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