Class 8 Force And Pressure CBSE Questions & Answers

Class 8 · Force And Pressure

This is Science Class 8 Force and Pressure CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Pressure exerted by water at the bottom of the container depends on the
  • A
    All of the above
  • B
    Size of the column
  • C
    Mass of the column
  • D
    Height of the column
    Correct
2
A force of 200 N is applied to an object of area 2 sq. m. the pressure will be
  • A
    400 Pa
  • B
    200 Pa
  • C
    50 Pa
  • D
    100 Pa
    Correct
3
Pressure is
  • A
    Directly proportional to area of contact
  • B
    Directly proportional to mass
  • C
    Inversely proportion to area of contact
    Correct
  • D
    Inversely proportional to force
4
Two boys exert force of 40 N and 60 N in opposite direction on an object. The resultant force is
  • A
    20 N
    Correct
  • B
    40 N
  • C
    100 N
  • D
    240 N
5
It is easy to walk on sand with flat shoes because
  • A
    Flat shoes are sand resistant
  • B
    Flat shoes have larger surface area
    Correct
  • C
    Flat shoes are lighter
  • D
    Flat shoes are made of plastic
6
Same force produces more pressure on
  • A
    Circular area
  • B
    Smaller area
    Correct
  • C
    Larger area
  • D
    Equal area
7
1N/M is equal to
  • A
    1.5 Pa
  • B
    10 Pa
  • C
    1 Pa
    Correct
  • D
    0.1 Pa
8
The lateral pressure exerted by liquid at same height is
  • A
    Not equal in all direction
  • B
    Equal in all direction
    Correct
  • C
    More in left direction
  • D
    Less in right direction
9
A box weighing 2 kg exerts a force of 20 N on the ground. The box covers an area of 2 sq. m on the ground. The pressure exerted by the box on the ground is
  • A
    10 Pa
    Correct
  • B
    30 Pa
  • C
    40 Pa
  • D
    20 Pa
10
Liquid pressure increases with
  • A
    Decrease in depth
  • B
    Decrease with air pressure
  • C
    Increase in depth
    Correct
  • D
    Increase with atmospheric pressure
11
At high altitudes atmospheric pressure
  • A
    Decreases
    Correct
  • B
    Remain same
  • C
    Increases
  • D
    Is always zero
12
Which of the following effect is not produced by force?
  • A
    Change in mass
    Correct
  • B
    Change in direction
  • C
    Change in speed
  • D
    Change in shape
13
The force depends on
  • A
    Mass and acceleration
    Correct
  • B
    Density and acceleration
  • C
    Pressure and mass
  • D
    Weight and acceleration
14
Rate of change in velocity is called
  • A
    Momentum
  • B
    Acceleration
    Correct
  • C
    Conservation
  • D
    Gravitation
15
The force required to move a stationary body is called
  • A
    Gravitational force
  • B
    Balanced force
  • C
    Frictional force
  • D
    Unbalanced force
    Correct