Live Education Quiz

1

If net force on a body is not zero, body will:

A Remain at rest B Move with constant velocity C Accelerate D Stop moving

2

Which of the following is an example of action-reaction pair?

A Weight and mass B Push on wall and wall pushing back C Friction and gravity D Speed and velocity

3

The centre of gravity of an irregularly shaped thin lamina can be found using a:

A Plumb line B Screw gauge C Vernier callipers D Metre rule

4

Greater mass means:

A Less inertia B More inertia C No inertia D Zero inertia

5

Mass measured by electronic balance depends on:

A Gravity B Spring constant C Comparison with standard mass D Temperature

6

The SI unit of mass is:

A Newton B Gram C Kilogram D Pound

7

Inertia is the property of a body due to which it:

A Moves faster B Changes shape C Resists change in its state D Stops moving

8

A couple is formed by:

A two forces perpendicular to each other. B two equal and opposite forces not in the same line. C two equal and opposite forces in the same line. D two unequal forces.

9

Why are airbags used in cars?

A To increase speed B To decrease force by increasing time C To reduce mass D To stop motion instantly

10

The mathematical form of Newton’s Second Law is:

A F = mv B F = ma C F = m/a D F = a/m

11

SI unit of weight is:

A Kilogram B Newton C Joule D Watt

12

Which instrument is used to measure weight?

A Electronic balance B Beam balance C Spring balance D Stopwatch

13

Mass of a body is defined as:

A Force acting on the body B Quantity of matter in the body C Weight of the body D Volume of the body

14

Newton’s Second Law of Motion relates force with:

A Velocity B Momentum C Acceleration D Distance

15

Which is a non-contact force?

A Friction B Tension C Gravitational force D Normal reaction

16

The turning effect of a force is called:

A Momentum B Pressure C Work D Torque

17

Weight of a body is the force due to:

A Air B Magnetism C Gravity D Electric field

18

Spring balance measures:

A Mass B Volume C Force D Density

19

The vertical or perpendicular component of a force F making an angle θ with the horizontal x-axis is given by:

A F cos(θ) B F tan(θ) C F sin(θ) D F cot(θ)

20

Which instrument is used to measure mass?

A Spring balance B Force meter C Electronic balance D Thermometer

21

Which has more inertia?

A Empty cart B Loaded cart C Football D Tennis ball

22

Formula of momentum is:

A p = mv B p = ma C p = m/v D p = v/m

23

Force is a vector quantity because it has:

A Magnitude only B Direction only C Magnitude and direction D No unit

24

Inertia depends upon:

A Volume B Mass C Velocity D Weight

25

Unit of force in SI system is:

A Dyne B Joule C Newton D Watt

26

If mass of a body is doubled and force remains same, acceleration will:

A Double B Become half C Remain same D Become zero

27

A body is in equilibrium when its:

A acceleration is zero. B speed is zero. C velocity is non-uniform. D displacement is zero.

28

Which force is responsible for weight?

A Magnetic force B Electric force C Gravitational force D Nuclear force

29

Action and reaction forces act on:

A Same body B Different bodies C Same direction D Same surface

30

Newton’s First Law of Motion is also called:

A Law of acceleration B Law of inertia C Law of action-reaction D Law of gravitation

Chapter 3: Dynamics – I + Chapter 4: Dynamics – II