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Physic > Definition, Terms And Laws Physic > Flashcards

Definition, Terms And Laws Physic Flashcards

1
Q

Kepler’s third law

A

The square of the orbital period of any planet is directly propotional to the cube of the radius of each orbit( law of period)

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2
Q

Orbital radius

A

Average value of the distance between the planet and the sun

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3
Q

Escape velocity, v

A

Minimum velocity need by an object on the surface of the earth to overcome the gravitational force and escape to outer space

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4
Q

Temperature, T

A

Measure of the degree of hotness of an object

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5
Q

Heat,Q

A

The amount of thermal energy that can be transfer from one object to another

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6
Q

Thermal equilibrium

A

A condition where net heat transfer between two object become zero

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7
Q

Heat capacity ,C

A

Quantity of heat needed to raise temperature of the object by 1°C

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8
Q

Specific heat capacity

A

Quantity of heat needed to raise the temperature of 1 kg mass of the substance by 1°C

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9
Q

Latent heat

A

Heat that is absorbed during melting and boiling without changed in temperature

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10
Q

Specific latent heat,l

A

The quantity of heat that is absorbed or released during a change of phase of 1kg of the substance without any change in its temperature

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11
Q

Specific latent heat of fusion,

A

The quantity of heat that is absorbed during melting or the quantity of heat released during freezing of one kilogram of the substance without any changed in temperature.

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12
Q

Specific latent heat of vaporization

A

The quantity of heat that is absorbed during boiling or the quantity of release during condensation of one kilogram of the substance without any change in temperature

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13
Q

Boyle’s law

A

Pressure is inversely proportional to volume for a fixed mass of gas at constant temperature

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14
Q

Charles’ Law

A

Volume is directly proportional to absolute temperature for a fixed mass of gas at constant pressure

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15
Q

Gay-Lussac’s Law

A

Pressure is directly proportional to absolute temperature of a fix mass of gas at constant volume

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16
Q

Oscillation vibration

A

Repetitive motion about an equilibrium position in the closed path

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17
Q

Amplitude

A

Maximum displacement from its equilibrium position

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18
Q

Transverse wave

A

A wave Which the vibration of particle in the medium is perpendicular to the direction of propagation of the wave

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19
Q

Longitudinal wave

A

A wave which the vibration of particle in the medium is parallel to the direction of the wave

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20
Q

Period

A

The time taken by a particles to make one complete oscillation or by a source to produce one complete cycle of wave

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21
Q

Frequency

A

Nombor of complete oscillation made by a particle or number of cycle of wave produced by a source in one second

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22
Q

Wavelength

A

Distance between two consecutive point in phase

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23
Q

Wave spéed

A

Distance traveled per second by a wave profile

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24
Q

External damping

A

Oscillating system loses energy to overcome friction or air resistance

25
Q

Internal damping

A

Oscillating system uses energy because of the stretching and compression of the vibrating particles in the system

26
Q

Damping

A

Reduction in amplitude in oscillating system due to loss of energy

27
Q

Resonance

A

When a periodic force is applied to an oscillating system natural frequency

28
Q

Wavefront

A

Lines joining all the point of the same phase

29
Q

Refraction of waves

A

The change in direction of propagation of wave cause by the change in the velocity of wave when the wave propagate from one medium to another

30
Q

Diffraction of wave

A

The spreading of wave when the wave passed through Gap or round a barrier

31
Q

Interference of wave

A

The super position of two or more wave from a coherent source of wave

32
Q

Constructive interference

A

A cure when two Crest or trough in superposition to produce maximum amplitude

33
Q

Constructive interference

A

Occur when two Crest or trough in superposition to produce maximum amplitude

34
Q

Destructive interference

A

Occur when a Crest and a trough in superposition to produce zero combined amplitude

35
Q

Electromagnetic spectrum

A

Seven types of electromagnetic wave that forms a continuous spectrum

36
Q

Electromagnetic wave

A

Produce electric and magnetic field vibrate at right angle to each other

37
Q

Refraction of light

A

A phenomenon when light change direction when it travels from one medium to another medium of different densities

38
Q

refractive index

A

The ratio OD speed of light in vacuum to the speed of light in medium

39
Q

Snell’s law

A

When the light travels from one medium to another medium in the incident Ray ,the refracted ray and the normal meet at one point and are in the same plane

40
Q

Total internal reflection

A

When light travel from a medium with high optical density to a medium of low optical density

41
Q

formation of rainbow

A

Cause s by refraction ,dispersion and total internal reflection when light passes through water droplet in air

42
Q

Critical angle

A

Incident angle when refracted angle equal to 90 degree

43
Q

Optical center

A

Point at the center of the lens

44
Q

Principle axis

A

Straight line through the optical center of a lens and the centre of curvature of both surface of the lens

45
Q

Axis of lens

A

Straight line through the optical center and a perpendicular to the principle axis

46
Q

Focal point

A

Point located at the principle axis of lens

47
Q

Objek distance

A

Distance between object and optical center of a lens

48
Q

Image distance

A

Distance between image and optical center of a lens

49
Q

Focal length

A

Distance between focal point and optical center of lens

50
Q

Lee Miu magnification

A

Ratio of image to heights to object height are equal to ratio of image distance to object distance

51
Q

Principle axis

A

Straight line passing through the centre of curvature and pole of the spherical mirror

52
Q

Centre of curvature

A

Centre of sphere which produce a concave or convex mirror

53
Q

Centre of curvature

A

Centre of sphere which produce a concave or convex mirror

54
Q

Radius of curvature of mirror

A

Distance between the pole of spherical mirror and the center of curvature

55
Q

Focal point

A

A point on this principal axis of the spherical mirror

56
Q

Focal point

A

A point on this principal axis of the spherical mirror

57
Q

Object distance

A

Distance between object and the pole of spherical mirror

58
Q

Image distance

A

Distance between image and the pole of spherical mirror

59
Q

Focal length

A

Focal length distance between focal point and the pole of spherical mirror

Physic (4 decks)

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