Physics Test 10

Total Questions: 25

1 - Two equal but unlike parallel forces having different line of action produce.

A ) A torque
B ) A couple ✅
C ) Equilibrium
D ) Neutral equilibrium

5 - A couple is formed by

A ) Two like parallel forces
B ) Two forces perpendicular to each other
C ) Two equal and opposite forces in the same line
D ) Two equal and opposite forces not in same line ✅

6 - A body is in equilibrium when its

A ) Acceleration is uniform
B ) Speed is uniform
C ) Speed and acceleration is uniform
D ) Acceleration is zero ✅

7 - A body is in neutral equilibrium when is centre of gravity

A ) Is at its highest position
B ) Is at the lowest position
C ) Keep its height if displaced ✅
D ) Is situated at its bottom

8 - Racing cars made stable by

A ) Increasing their speed
B ) Decreasing their mass
C ) Lowering their centre of gravity ✅
D ) Decreasing their width

10 - In SI unit of torque is

A ) Nm ✅
B ) Ns
C ) Nm-¹
D ) Nm²

12 - An example of neutral equilibrium is

A ) Football ✅
B ) Block
C ) Book on table
D ) Pencil at its tip

13 - A pencil lying horizontally state is

A ) Equilibrium
B ) Stable equilibrium
C ) Neutral equilibrium ✅
D ) Non stable equilibrium

14 - The value of tan 45° is

A ) 0.5
B ) 1.732
C ) 0.577
D ) 1 ✅

15 - Complete equation ∅= ____ Fv/Fx

A ) Sin-¹
B ) Cos-¹
C ) tan-¹ ✅
D ) tan

17 - Cos is equal to

A ) Rsae/ perpendicular
B ) Base/Hypotenuse ✅
C ) Perpendicular/Base
D ) Perpendicular/hypotenuse

18 - Point of intersection of medians is the centre of gravity of uniform

A ) Rod
B ) Circular ring
C ) Solid cylinder
D ) Triangular sheet

19 - The turning effect of a force is called

A ) Momentum
B ) Torque ✅
C ) Pressure
D ) Work

20 - A pencil lying horizontally force of attraction vanishes at

A ) Equilibrium
B ) Stable equilibrium
C ) Neutral equilibrium ✅
D ) Non stable equilibrium

22 - Formula for direction of resultant force with the help of rectangular components is

A ) ∅ = tan-¹ Fv/fx
B ) ∅ = tan-¹ fx/fv ✅
C ) ∅ = sin-¹ fv/fx
D ) ∅ = Cos-¹ fx/fv

23 - The conditions of equilibrium are

A ) 1
B ) 2 ✅
C ) 3
D ) 4

25 - Racing cars are made stable by ____

A ) Increase their speed
B ) Decreasing their mass
C ) Lowering their centre of gravity ✅
D ) Decreasing their width