FIELDS AND FORCES
A knowledge enhancing quiz from dadazi.net.
What do you kow about natural fields and forces like magenetism and gravitation? Here is a quiz to get you out on to the field and play the game of 'Fields and Forces'
1. Which of the following is not the fundamental force of nature?
Weak nuclear force
Strong nuclear interaction
Cohesive force
Electromagnetic force
2. A fictitious outward force on a particle rotating about an axis is:
centrifugal force
centripetal force
tangential force
Coriolis Force
3. The four basic forces in nature are:- I. Gravitational force - II. Electromagnetic force - III. Strong nuclear force - IV. Weak nuclear force. ---- The relative magnitudes of these forces are in the order of:
I>II>III>IV
III >II>IV>I
III >II>I> IV
III>I>II> IV
4. The separation of cream during the churning of milk is due to?
frictional force
viscous drag
5. Which is not the unit of force among the following?
dyne
newton
pound
kilogram-weight
6. Weighf of a body may have the following attributes: I.Gravitational force acting on a body. - II.Independent of the mass of the body. III.Weightless during free fall. - IV.Different at different places on earth's surface. - Which combination is correct?
I and III only
I, III and IV only
I, II and III only
I, II, III and IV
7. The coulombian forces are responsible for binding - I. an atom to an atom to form a molecule. - II. an electron to a nucelus to form an atom. - III. a molecule to a molecule to form a solid or a liquid. -- Which combination is correct?
I and II only
II and III only
I, II, and III
8. The most universal of all the basic forces in nature is?
gravitational force
electromagnetic force
weak nuclear interaction
strong nuclear interaction
9. The forces that hold pieces of matter together and give them strength are called ?
elastic forces
adhesive forces
cohesive forces
frictional forces
10. Between different layers of fluid in relative motion, viscosity introduces?
intermolecular force
radial prce
cohesive force
11. The inward force required to keep a satellite moving in a circular orbit is?
aerodynamic force
12. The production of electric charge on a conductor under the influence of an electric field is called:
electrostriction
electromagnetic induction
electrostatic induction
electromagnetic interaction
13. 'Action at a distance' is revealed most prominently in:
electric force
magnetic force
14. Impulse is,
a large force acting for a long period
a large force acting for a short period
a small force acting for a long period
a small force acting for a short period
15. Three forces are in equilibrium, then each force is
equal to the sum of the remaining two.
equal to the difference of the remaining two.
greter than the sum of the remaining two
greater than the difference of the remaining two.
16. The natural force that acts over a distance that is less than 0.000000000000001 metres is known as
nuclear force
coulombian force
leptonic force
17. The gravitational force with which a body is attracted towards the earth is
maximum at the equator and minimum at the poles
minimum at the equator and maximum at the poles.
18. 'If three forces act on a particle in equilibrium, each is proportional to the sine of the angle between the other two'. This is known as
Law of triangle of forces.
Law of parallelogram of forces
Lamy's theorem
Law of polygon of forces
19. Two parallel wires carrying currents in the same direction
repel each other due to electric force between them.
repel each other due to magnetic force between them.
attract each other due to electric force between them.
attract each other due to magnetic force between them.
20. The force that holds nuclcons together is called
electrostatic force.
strong nuclear force.
weak nuclear force.
inter nuclear force.
21. A system of two equal and opposite parallel forces is called
couple
moment
torque
torsion
22. Nuclear forces are
strong and long-ranged
strong and short-ranged
weak and long-ranged
weak and short-ranged
23. The force responsible in the formation of the galaxies is
strong attractive force
inter-galactic force
gravitational forc
24. The force that tends to minimize the area of a liquid surface is known as
surface tension
viscous force
adhesive force
25. A force that acts only for a short duration but large enough to cause a change in momentum on the body it acts is called
hadronic force
drag force
impulsive force
26. Which of the following statements is not true about the gravitational force?
It is the weakest force in nature
It is the most universal of all the natural forces
It is the same as the force of gravity
The gravitational force between two bodies decreases as the distance between them increases.
27. A force between a body and the air caused by their relative motion is known as
lift force
wind stress
28. Consider the following statements about friction: - I. Friction is a cohesive force.- II. Frictional force cannot start a body moving. - III. Friction is a dissipative force, - it produces heat that is not mechanical. Which combination is not true?
I only
II only
III only
None of the above
29. When a body is totally or partially immersed in z liquid, an upward force, called upthrust, acts frorr the liquid, which depends on
weight of liquid that is displaced.
weight of tht body that is immersed.
volume of the body that it\s immersed.
amount of liquid that is displaced.
30. The electrostatic force between two electrons is F. What will be the electrostatic force between two protons at the same distance?
-F
F
-1836F
1836 F
31. A retarding force that acts upon a body moving through a gaseous medium in a direction opposite to the motion of the body is called
friction drag
pressure drag
aerodynamic drag
wave drag
32. Read the statements: - I. Magnetic field is unable to penetrate into a superconductor. - II. Electric field can be cut off by a screen of conducting material. -III. Gravitational field can be transmitted through all bodies. Which statement is false?
I
II
III
Nane of these.
33. A method of opposing the force of gravity using the mutual repulsion between two like magnetic poles is called
magnetic escapement
magnetic suspension
magnetic levitation
magnetic rotation
34. The interaction between electron and neutrino in radioactive decay is a/an
electrostatic force
35. When an aeroplane moves with constant velocity
no force is acting on it
a net force is acting in the forward direction.
the sum of all the forces on it is zero.
it moves in the forward direction because of acceleration.
36. The migration of fine particles of a solid suspended in a liquid to the anode or cathode when an electric field is applied to the suspension is called
cataphoresis
electrophoresis
anaphoresis
eteetroviscosity
37. Which of the following shows that there must be a force acting on the earth and directed towards the sun?
Revolution of the earth round the sun.
Apparent motion of the sun round the earth.
Phenomena of day and night.
Rotation of earth about its axis.
38. Name the theory which attempts to link all the four fundamental forces of nature?
Centrosymmetry
Unitary symmetry
Space reflection symmetry
Supersymmetry
39. 'Hypercharge', the hypothetical fifth force of nature, was discovered by Ephraim Fishbach in 1986. What is its nature?
It enhances gravity
It acts perpendicular to gravity
It acts counter to gravity
It nullifies gravity
40. An exchange force between nucleons in which charge is exchanged is called
Majorana force
Heisenberg force
Wiegner force
Bartlett force