HARD
11th Odisha Board
IMPORTANT
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A rectangular tank 2 m deep, 5 m broad and 10 m long is filled with water, calculate the thrust on each side and on the base. (Density of water = 1000kg/m3, g=9.8m/s2) 

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Important Questions on Hydrostatics

HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 11>Chapter 13 - Hydrostatics>MODEL QUESTIONS>Q 2
A cube floating on mercury has 1/4 of its volume submerged. If enough water is added to cover the cube, what fraction of its volume will remain immersed in mercury?
HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 11>Chapter 13 - Hydrostatics>MODEL QUESTIONS>Q 3
A book of wood weighs 4 kg and has a relative density 0.6. It is to be loaded with lead so that it will float completely immersed. What weight of lead is needed? (a) if the lead is on top of the block (b) if the lead is attached below the block? (Density of lead =11.34×103kg/m3)
EASY
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 11>Chapter 13 - Hydrostatics>MODEL QUESTIONS>Q 4

A spherical iron shell floats almost completely submerged in water. If outer diameter is 0.5 m and the relative density of iron is 8, find the inner diameter.

(Answer correct to four decimal places)

HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 11>Chapter 13 - Hydrostatics>MODEL QUESTIONS>Q 5
A cylinder of iron floats vertically and fully immersed in a vessel containing water and mercury. Find the ratio of the length of cylinder immersed in water to that in mercury. (Relative density of mercury =13.6 and that of iron=7.78)
HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 11>Chapter 13 - Hydrostatics>MODEL QUESTIONS>Q 6
A stem of a common hydrometer is cylindrical and the highest graduation corresponds to relative density 1.0 and the lowest  1.3. What relative density corresponds to a point exactly midway between the division?
HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 11>Chapter 13 - Hydrostatics>MODEL QUESTIONS>Q 7

The stem of hydrometer is divided into 100 equal parts; it reads 0 in water and 100 in a liquid of relative density 0.8. Find the relative density of liquid in which it reads 50.

MEDIUM
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 11>Chapter 13 - Hydrostatics>MODEL QUESTIONS>Q 8
An ornament weighing 36 g in air weighs only 34 g in water. Assuming that some copper is mixed with gold to prepare the ornament. Find the amount of copper in it. (Answer correct to one decimal place) .Specific gravity of gold is 19.3 and that of copper is 8.9.
HARD
11th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 11>Chapter 13 - Hydrostatics>MODEL QUESTIONS>Q 9
A cubical block of ice floating in water has to support a metal piece weighing 0.5 kg. What can be the minimum edge of the block so that it does not sink in water? (Sp. gr.of ice = 0.9)