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Grade 9 Exam  >  Grade 9 Test  >  Physics  >  Test: Thrust And Pressure (Old Syllabus) - Grade 9 MCQ

Thrust And Pressure (Old Syllabus) - Grade 9 Physics Free MCQ Test


MCQ Practice Test & Solutions: Test: Thrust And Pressure (Old Syllabus) (10 Questions)

You can prepare effectively for Grade 9 Physics for Grade 9 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Thrust And Pressure (Old Syllabus)". These 10 questions have been designed by the experts with the latest curriculum of Grade 9 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 10

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Test: Thrust And Pressure (Old Syllabus) - Question 1
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Thrust exerted by an iron cuboid when placed on sand is equal to

Detailed Solution: Question 1

Thrust is defined as the force acting perpendicularly on a surface. Here the weight of the iron cuboid is the force which is acting normal or perpendicular to the surface of the sand.
The weight or thrust acting per unit surface area is nothing but pressure.
Therefore, we can say that, the weight of the iron cuboid will be the thrust exerted by it on sand.

Test: Thrust And Pressure (Old Syllabus) - Question 2
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If weight of an object is equal or less than upthrust acting on it then object would

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Test: Thrust And Pressure (Old Syllabus) - Question 3
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The pressure exerted by water (density = 103 kg/m3) on the bottom surface (2m × 4m) of tank having dimensions 2m × 4m × 2m is​

Detailed Solution: Question 3

The pressure exerted by a fluid in a tank is given by the formula:

P = ρgh

where


  • ρ (rho) is the density of the fluid (water, 103 kg/m3)

  • g is the acceleration due to gravity (approximately 9.8 m/s2)

  • h is the height of the fluid column (2 meters)

Substitute the values into the formula:


  • P = 103 kg/m3 × 9.8 m/s2 × 2 m

  • P = 1.96 × 104 Pa

Therefore, the correct answer is:

D: 1.96 × 104 Pa

Test: Thrust And Pressure (Old Syllabus) - Question 4
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The SI unit of pressure is​

Test: Thrust And Pressure (Old Syllabus) - Question 5
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A sharp edge blade is more effective in cutting than a blunt blade due to

Test: Thrust And Pressure (Old Syllabus) - Question 6
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For a given applied thrust, pressure exerted on a surface by a sharp pin is

Detailed Solution: Question 6

Pressure exerted by a sharp needle on a surface is more than the pressure exerted by a blunt needle.

Test: Thrust And Pressure (Old Syllabus) - Question 7
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The neck and bottom of a bottle are 2cm and 20 cm in diameter respectively. The cork is pressed with same pressure. If the cork is pressed with a force of 1.2 kgf on the neck of the bottle, the force exerted on the bottom of the bottle will be

Detailed Solution: Question 7

Diameter of the neck is = 2cm = 0.02m
So, the area of the cross section of the neck is, a = Πd² /4 = 0.000314 m²
Diameter of the bottom is = 20cm = 0.2m
So, the area of the cross section of bottom is,  A = Πd² /4 = 0.0314 m²
Force applied to the cork, f = 1.2 kgf
Let F be the force at the bottom, According to pascal’s law  F/A = f/a
⇒ F = (f/a)*A = (1.2/0.000314)*(0.0314) = 120 Kgf

Test: Thrust And Pressure (Old Syllabus) - Question 8
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An object exerts a force F on a surface of surface area A. The pressure P acting on the surface is given by

Detailed Solution: Question 8

The pressure acting on the surface is given by P = F/A
The force applied os perpendicular to the surface of objects per unit area. Here, P is the pressure, F is the force and A is the area. Pressure is scalar quality and its unit is pa 
(pascal). Thus, the pressure acting on the surface is given by P = F/A. 

Test: Thrust And Pressure (Old Syllabus) - Question 9
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To observe and compare the pressure exerted by three different faces of a cuboid on sand, the following Cuboid is available to you:
(A) Wooden cuboid of dimension 20 cm x 30 cm x 50 cm
(B) Aluminium cuboid of dimension 3 cm x 6 cm x 12 cm
(C) Iron cuboid of dimension 5 cm x 10 cm x 15 cm
(D) Iron cuboid of dimension 20 cm x 30 cm x 15 cm
The best choice from the practical point of view would be:

Detailed Solution: Question 9

It will give us a correct measure of high and low pressure on different faces like 20×30 cm will give lowest pressure and 20×15 will give highest pressure and iron has quite large weight so it will be easy for us to determine pressure and collect information.

Test: Thrust And Pressure (Old Syllabus) - Question 10
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A rectangular block of wood of dimensions 40cm x 20cm x 10cm is kept on a table top. The pressure is greatest when it is rested on

Detailed Solution: Question 10

Mass of the Wooden block, m = 5Kg
Thrust due to wooden block, Mg = 5kg x 9.8 m/s² = 49N

(a)    Surface area of 20 Cm x 10 Cm surface ,
A = (20 x 10) cm² = (0.2 x 0.1) m² = 0.02 m²
P = mg / A = 49 N / 0.02 m² = 49/0.02 N/m²  
Or Pressure, P = 2450 N/m²

(b)   Surface area of  40 cm x 20 cm surface,
A = ( 40 x 20) cm² = ( 0.4 x 0.2 ) m² = 0.08 m²
P = mg / A = 49 N / 0.08 m² = 49/0.08 N/m²
Or Pressure, P = 612.5 N/m²
 

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About this Grade 9 Practice Test

This test contains 10 MCQs on Thrust And Pressure (Old Syllabus) with detailed solutions for each question. It is part of the Physics for Grade 9 course on EduRev, designed to align with the current Grade 9 syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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