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Physics Definitions and formulae

Total questions: 80

Worksheet time: 42mins

Name
Class
Date
1.

SI unit for mass

a)

kilograms

b)

grams

c)

pounds

d)

ounces

2.

SI unit for length

a)

miles

b)

centimeters

c)

meters

d)

inches

3.

SI unit for time

a)

seconds

b)

minutes

c)

hours

d)

days

4.

SI unit for current

a)

millivoltage

b)

voltage

c)

milliampere

d)

ampere

5.

SI unit for power

a)

Watts

b)

Joules

c)

Newtons

d)

Meters

6.

SI unit for power

a)

Joules

b)

Joules second

c)

Joules / second

d)

second / Joules

7.

SI unit for force

a)

Joules

b)

Watts

c)

Newtons

d)

meters

8.

milli is

a)

x 10-1

b)

x 10-2

c)

x 10-3

d)

x 10-6

e)

x 10-9

9.

nano is

a)

x 10-1

b)

x 10-2

c)

x 10-3

d)

x 10-6

e)

x 10-9

10.

nano is

a)

m

b)

M

c)

μ

d)

n

e)

p

11.

micro is

a)

m

b)

M

c)

μ

d)

n

e)

p

12.

milli is

a)

m

b)

M

c)

μ

d)

n

e)

p

13.

deci is

a)

x 10-1

b)

x 10-2

c)

x 10-3

d)

x 10-6

e)

x 10-9

14.

mega is

a)

m

b)

M

c)

μ

d)

n

e)

p

15.

micro is

a)

x 10-1

b)

x 10-2

c)

x 10-3

d)

x 10-6

e)

x 10-9

16.

kilo is

a)

x 103

b)

x 106

c)

x 109

d)

x 1012

17.

Giga is

a)

x 103

b)

x 106

c)

x 109

d)

x 1012

18.

Mega is

a)

x 103

b)

x 106

c)

x 109

d)

x 1012

19.

centi is

a)

x 10-1

b)

x 10-2

c)

x 10-3

d)

x 10-6

e)

x 10-9

20.

Period of a pendulum depends ONLY on...

a)

angle at which it is released

b)

mass of pendulum bob

c)

size of pendulum bob

d)

length of pendulum

21.

Newtons 3rd Law states that

a)

When body A exerts a force on body B, body B will exert an equal and opposite force on body A.

b)

Fnet = ma

c)

Inertia

d)

An object will continue in its state of rest or uniform motion, unless a resultant force acts on it.

22.

Newtons 2nd law states that

a)

When body A exerts a force on body B, body B will exert an equal and opposite force on body A.

b)

Fnet = ma

c)

Inertia

d)

An object will continue in its state of rest or uniform motion, unless a resultant force acts on it.

23.

Newtons 1st law states that

a)

When body A exerts a force on body B, body B will exert an equal and opposite force on body A.

b)

Fnet = ma

c)

Inertia

d)

An object will continue in its state of rest or uniform motion, unless a resultant force acts on it.

24.

What is inertia?

a)

the reluctance of an object to change its state of rest

b)

the reluctance of an object to change its state of uniform motion

c)

the reluctance of an object to change its state of rest or uniform motion

25.

What does inertia depend on?

a)

weight of object

b)

mass of object

c)

volume of an object

d)

shape of an object

26.

SI unit for energy

a)

Joules

b)

Watts

c)

Newtons

d)

meters

27.

Distance

a)

= area under speed-time graph

b)

= speed / time

c)

= time / speed

d)

= displacement

28.

Acceleration

a)

acceleration = change in speed

b)

acceleration = velocity x time

c)

acceleration = change in velocity / time taken

d)

acceleration = average speed

29.

distance =

a)

gradient of dist-time graph

b)

gradient of displ-time graph

c)

gradient of speed-time graph

d)

area under speed-time graph

e)

area under vel-time graph

30.

displacement =

a)

gradient of dist-time graph

b)

gradient of displ-time graph

c)

gradient of speed-time graph

d)

area under speed-time graph

e)

net area under vel-time graph

31.

speed =

a)

gradient of dist-time graph

b)

gradient of displ-time graph

c)

gradient of vel-time graph

d)

area under speed-time graph

e)

area under vel-time graph

32.

velocity =

a)

gradient of dist-time graph

b)

gradient of displ-time graph

c)

gradient of speed-time graph

d)

area under speed-time graph

e)

area under vel-time graph

33.

acceleration =

a)

gradient of dist-time graph

b)

gradient of displ-time graph

c)

gradient of speed-time graph

d)

area under speed-time graph

e)

area under vel-time graph

34.

acceleration =

a)

gradient of dist-time graph

b)

gradient of displ-time graph

c)

gradient of vel-time graph

d)

area under speed-time graph

e)

area under vel-time graph

35.

Formula for acceleration

a)

a = (final velocity - initial velocity) / time taken

b)

a = (initial velocity - final velocity) / time taken

c)

a = (initial velocity + final velocity) / time taken

d)

a = (final velocity - initial velocity) x time taken

36.

Formula for velocity

a)

v = distance*time

b)

v = change in distance / time

c)

v = change in displacement / time

d)

v = time / distance

37.

What happens when an object reaches terminal velocity

w = weight and A.R = air resistance

a)

w = A.R

b)

w > A.R

c)

w < A.R

d)

Only force is w

38.

Formula for net force

a)

Fnet = ma

b)

Fnet = m/a

c)

Fnet = a/m

39.

_______________________ is equal to mass times acceleration

a)

Distance

b)

Force

c)

Work

d)

Resultant Force

40.

Pressure

a)

pressure = force x area

b)

pressure = force / area

c)

pressure = area / force

d)

pressure = force + area

41.

Density

a)

density = weight / volume

b)

density = mass x volume

c)

density = volume / mass

d)

density = mass / volume

42.

Mass refers to the?

a)

amount of matter in an object

b)

weight of an object

c)

both matter and weight

d)

amount of gravitational force on an object

43.

Formula for weight

a)

w = mg

b)

w = m/g

c)

m = wg

d)

w = g/m

44.

Moment

a)

moment of a force = force × distance moved by object in direction of force

b)

moment = force x (perpendicular distance)2

c)

moment = force x perpendicular distance

d)

moment = force / perpendicular distance

45.

Formula for work done

a)

work done = force / distance

b)

work done = force × distance moved by object in direction of force

c)

work done = distance / force

d)

work done = force x perpendicular distance

46.

GPE

a)

GPE = wmg

b)

GPE = mgh

c)

GPE = mh

d)

GPE = mgh2

47.

Kinetic Energy

a)

KE = mgh

b)

KE = v2/m

c)

KE = ½ mv

d)

KE = ½ mv2

48.

W = work done, F = force, s = distance moved by object in direction of the force

a)

W = F x s

b)

W = F / s

c)

W = F / m

d)

W = s / F

49.

___________________ is the rate at which work is done, or the rate at which energy is transferred

a)

potential energy

b)

kinetic energy

c)

Power

50.

Power

a)

power = change in energy / time

b)

power = change in energy x time

c)

power = time / change in energy

51.

Formula for power

a)

P = W / t

b)

P = W * t

c)

P = E * t

52.

Power

a)

power = work done x time

b)

power = work done / time

c)

power = time / work done

53.

Wave Speed

a)

v = λ / f

b)

v = λf

c)

v = f / λ

54.

Charge flow, Q

a)

Q = It

b)

Q = I / t

c)

Q = t / I

55.

Potential Difference, V

a)

V = R / I

b)

V = I / R

c)

V = RI

56.

Power, P

a)

P = p x d

b)

P = V / I

c)

P = VI

d)

P = I / V

57.

Energy

a)

energy = power × time

b)

energy = power / time

c)

energy = time / power

58.

Work Done, W

a)

W = Q / V

b)

W = V / Q

c)

W = Q x V

59.

Energy

a)

energy = charge / potential difference

b)

energy = charge × potential difference

c)

energy = potential difference / charge

60.

gravitational field strength refers to the

a)

gravitational force acting on an object

b)

region in which a mass experiences a force due to gravity

c)

gravitational force per unit mass

61.

gravitational field refers to the

a)

gravitational force acting on an object

b)

region in which a mass experiences a force due to gravity

c)

gravitational force per unit mass

62.

weight refers to the

a)

gravitational force acting on an object

b)

region in which a mass experiences a force due to gravity

c)

gravitational force per unit mass

63.

which of the following ways increases stability?

a)

raising centre of gravity

b)

lowering centre of gravity

c)

decreasing base area

d)

placing more mass at the top

64.

which of the following ways increases stability?

a)

raising centre of gravity

b)

decreasing the base area

c)

increasing the base area

d)

placing more mass at the top

65.

centre of gravity refers to the

a)

point from which entire mass of object is at

b)

point from which entire weight of object acts from

c)

point at which most force is felt

d)

point at which is somewhere along object

66.

internal energy consists of

a)

potential energy

b)

kinetic energy

c)

elastic energy

d)

internal potential energy

67.

internal K.E depends only on

a)

temperature of object

b)

temperature of particles

c)

average separation of particles

d)

physical state of object

68.

internal K.E means

a)

K.E of object

b)

K.E of a particle

c)

sum of K.E of all particles

69.

internal P.E depends only on

a)

temperature of object

b)

temperature of particles

c)

average speed of particles

d)

physical state of object

70.

Which of the following are criteria for total internal reflection (tick all that applies)

a)

light must travel from optically denser medium to optically less dense medium

b)

light must travel from optically less dense medium to optically denser medium

c)

angle of incidence > critical angle

d)

angle of incidence < critical angle

71.

critical angle is a type of

a)

angle of incidence

b)

angle of refraction

c)

angle of reflection

72.

critical angle refers to

a)

angle of incidence for which angle of reflection in optically less dense medium is 90o

b)

angle of incidence for which angle of reflection in optically denser medium is 90o

c)

angle of incidence for which angle of refraction in optically denser medium is 90o

d)

angle of incidence for which angle of refraction in optically less dense medium is 90o

73.

wavefront is defined as an imaginary line that

a)

joins all adjacent points that are in phase

b)

joins all crests only

c)

join all troughs only

d)

join all points of equilibrium

74.

Define period

a)

time taken for oscillations

b)

number of complete oscillations per unit time

c)

time taken for one complete oscillation

75.

Define frequency

a)

time taken for oscillations

b)

number of complete oscillations per unit time

c)

time taken for one complete oscillation

76.

Resistance of wire is given by

a)

R = ρ / Al

b)

R = ρl / A

c)

R = ρlA

d)

R = ρA / l

77.

Like charges

a)

repel

b)

attract

78.

Unlike charges

a)

repel

b)

attract

79.

If terminal velocity is not reached during falling, it means that

a)

w = A.R

b)

w > A.R

c)

w < A.R

d)

Only force is w

80.

Fnet = 0 means

a)

a is constant

b)

a is positive

c)

a is negative

d)

a is zero

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