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Force and Pressure Science - Force and Pressure

Gujarat Board (GSEB) - STD 8 - Science (GSEB - English Medium). 124 questions in this chapter.

Question types

Force and Pressure question types

124 questions across 7 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

124
Questions
7
Question groups
5
Question types
Sample Questions

Force and Pressure questions

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

Q 1M.C.Q. [I MARKS]1 Mark
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A brick is kept in three different ways on a table as shown in figure. The pressure exerted by the brick on the table will be
  • ✓
    maximum in position A
  • B
    maximum in position C
  • C
    maximum in position B
  • D
    equal in all cases

Answer: A.

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Q 2M.C.Q. [I MARKS]1 Mark
During dry weather while combing hair, sometimes we experience hair flying apart. The force responsible for this is
  • A
    force of gravity
  • ✓
    electrostatic force
  • C
    force of friction
  • D
    magnetic force

Answer: B.

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Q 3M.C.Q. [I MARKS]1 Mark
In figure, two boys A and B are shown applying force on a block. If the block moves towards the right. which one of the following statements is correct ?
Image
  • ✓
    Magnitude of force applied by A is greater than that of B.
  • B
    Magnitude of force applied by A is smaller than that of B.
  • C
    Net force on the block is towards A.
  • D
    Magnitude of force applied by A is equal to that of B.

Answer: A.

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Q 5M.C.Q. [I MARKS]1 Mark
In the circuit shown in figure, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer ?
Image
  • A
    Gravitational force alone
  • B
    Electrostatic force alone
  • ✓
    Magnetic force alone
  • D
    Frictional force alone

Answer: C.

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Q 11questions in short. [2 marks ]2 Marks
An archer shoots an arrow in the air horizontally. However, after moving some distance, the arrow falls to the ground. Name the initial force that sets the arrow in motion. Explain why the arrow ultimately falls down ?
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Q 21questions in short. [3 marks ]3 Marks
Watson fills a bottle completely with water. The bottle has three same sized plugged holes on Its wall. Watson pulls out the plugs and checks the position of the stream of water coming out.
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Image
(i) What does Watson's activity show ?
$\quad$(a) Liquids exert pressure.
$\quad$(b) Liquids contract on cooling.
$\quad$(c) Liquids cannot be compressed.
$\quad$(d) Liquids have no definite shape.
(ii) Liquids exert pressure on the walls of container
$\quad$1. at same depth
$\quad$2. at different depth
$\quad$3. with same strength
$\quad$Which of the following is correct ?
$\quad$(a) Only 1$\quad$(b) Only 3$\quad$(c) Only 2$\quad$(d) Only 1 and 3
(iii) Pressure exerted by liquids at the bottom depends on
$\quad$(a) width of the liquid column
$\quad$(b) shape of the column
$\quad$(c) shape of the container
$\quad$(d) height of the liquid column
(iv) Which of the following does not affect the pressure beneath the surface of a liquid ?
$\quad$(a) Strength of the gravitational field
$\quad$(b) Area of the liquid
$\quad$(c) Density of the liquid
$\quad$(d) Depth of the liquid
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Q 22questions in short. [3 marks ]3 Marks
Resultant forces considered in following situations
(i) If the two forces act in the same direction on a body, the net force acting on it is the sum of two forces.
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(ii) If the two forces act in the opposite directions on a body, the net force acting on it is the difference between two forces.
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Suppose, two forces of 15 N and 30 N act on a body from the left hand side, while another force of 35 N acts on it from the right hand side. Find the resultant of the force and its direction.
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Q 25questions in short. [3 marks ]3 Marks
In the following situation, identify the agent exerting the force and the object on which it acts. State the effect of the force in each case.
(a) Squeezing a piece of lemon between the fingers to extract its juice.
(b) Taking out paste from a toothpaste tube.
(c) A load suspended from a spring while its other end is on a hook fixed to a wall.
(d) An athlete making a high jump to clear the bar at a certain height.
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Q 31Match the Following.4 Marks
Column IColumn II
(a) Electrostatic force(i) Attract each other
(b) Atmospheric pressure(ii) Exert same pressure at equal depth
(c) Unlike poles(iii) 76 mm of Hg
(d) Liquids(iv) Force between charges
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