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Pressure in Fluids PHYSICS - Pressure in Fluids

ICSE - STD 9 - PHYSICS (ICSE - English Medium). 34 questions in this chapter.

Question types

Pressure in Fluids question types

34 questions across 5 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.

34
Questions
5
Question groups
5
Question types
Sample Questions

Pressure in Fluids questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
The atmospheric pressure on earth's surface is approximately
  • ✓
    $10^5 Pa$
  • B
    $10^4 Pa$
  • C
    $9.6 \times 10^4 N / m ^2$
  • D
    $10^{-4} Pa$

Answer: A.

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Q 2MCQ1 Mark
Pressure at a point inside a liquid does not depend on :
  • A
    The depth of the point below the surface of the liquid
  • B
    The nature of the liquid
  • C
    The acceleration due to gravity at that point
  • ✓
    The shape of the containing vessel

Answer: D.

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Q 3MCQ1 Mark
The pressure exerted by $\left.5 0 ~ kg ~ ( g = 1 0 m / s ^2\right)$ on an area of cross section of $2 m^2$ is :
  • A
    50 Pa
  • B
    200 Pa
  • ✓
    250 Pa
  • D
    1000 Pa

Answer: C.

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Q 4MCQ1 Mark
A dam for water reservoir is built thicker at the bottom than at the top because :
  • ✓
    pressure of water is very large at the bottom due to its large depth
  • B
    water is likely to have more density at the bottom due to its large depth
  • C
    quantity of water at the bottom is large
  • D
    variation in value of ' $g$ '

Answer: A.

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Q 5MCQ1 Mark
As we move upwards, the atmospheric pressure:
  • A
    increases
  • ✓
    decreases
  • C
    remains same
  • D
    cannot be said

Answer: B.

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Q 10[2 Mark Question Answer]2 Marks
Calculate the hydrostatic pressure exerted by water at the bottom of a beaker. Take the depth of water as 40 cm , the density of water $1000 kgm ^{-3}$ and $g =9.8 ms^{-2}$.
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Q 12[2 Mark Question Answer]2 Marks
Pressure at bottom of sea at some particular place is 8968960 Pa . If density of sea water is $1040 kgm ^3$ calculate the depth of sea. Take $g =9.8 ms^{-2}$. Neglect the pressure of the atmosphere.
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Q 14[3 Mark Question Answer]3 Marks
The pressure in water pipe on the ground floor of a building is 40000 pascals, whereas on the first floor it's 10000 pascals. Find the height of first floor. (Acceleration due to gravity $g =10 ms^{-2}$ )
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Q 16[3 Mark Question Answer]3 Marks
At a given place, a barometer records 70 cm of Hg . If the mercury in barometer is replaced by water, what would be resulting reading? (Density of $Hg =13600 kg / m ^2$; Density of water $=1000 kg / m ^3$ )
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Q 19[5 Mark Question Answer]4 Marks
A beaker contains a liquid of density ‘ρ’ upto height ‘h’such that ‘PA’ is atmospheric pressure and ‘g’ is acceleration due to gravity. Answer the following questions :
(a) What is the pressure on the free surface of liquid?
(b) What is the pressure on the base of beaker?
(c) What is the lateral pressure at the base on the inner walls of beaker?

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Q 20[5 Mark Question Answer]4 Marks
(a) The area of cross-sections of the pump plunger and press plunger of a hydraulic press are $0.02 m^2$ and $8 m^2$ respectively. If the hydraulic press overcomes a load of 800 kgf , calculate the force acting on pump plunger.
(b) If the mechanical advantage of the handle of pump plunger is 8 , calculate the force applied at the end of the handle of pump plunger.
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