GCSE Physics Definitions for Exams (A+ Notes) Topics: Mechanics, Heat & Temperature, Sound & Waves, Electricity and Modern Physics - DISTINCTION GUARANTEED
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GCSE Physics Dictionary/Glossary: This is a document of 7 pages with ALL the definitions you will need to know for your Physics Course. Contains definitions from the chapters of Mechanics, Heat & Temperature, Sound & Waves, Electricity and Modern Physics. Stop searching on Google and get to learn t...
Physics Definitions Flashcards: Most Common Questions in Exams, A+ Notes - DISTINCTION GUARANTEED
Flashcards25 Flashcards
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Flashcards25 Flashcards
$3.360 sales
Some examples from this set of practice questions
1.
What\'s a real image?
Answer: An image formed by the actual intersection of light rays.
2.
What\'s the refractive index of a medium?
Answer: Is the ratio of the speed of light in a vacuum to its speed in a specific medium (c1/c2)
3.
What\'s the critical angle?
Answer: The incident angle in a dense medium when the refracted angle in a less dense medium is 90° to the normal.
4.
What\'s specific heat capacity?
Answer: Heat energy needed to change 1kg of a substance by one degree Kelvin.
5.
What\'s specific latent heat?
Answer: Heat energy needed change state 1 kg of a substance without change temperature.
6.
What\'s thermometric property?
Answer: A property that changes measurably with temperature.
7.
What\'s monochromatic light?
Answer: Light with one wavelength/color only.
8.
What\'s transverse wave?
Answer: A wave where the direction of vibration is perpendicular to the direction in which the wave travels.
9.
What\'s diffraction?
Answer: The spreading of waves around a slit or an obstacle.
10.
What\'s the doppler effect?
Answer: The apparent change in frequency of a wave due to the relative motion between source and observer.
Content preview
Physics Notes
DEFINITIONS
LIGHT
SOUND & WAVES
HEAT & TEMPERATURE
MECHANICS
ELECTRICITY
MODERN PHYSICS
BY STEPHANI MADUKA
, PHYSICS COURSE DEFINITIONS
BY STEPHANI MADUKA
LIGHT
Real image: an image formed by the actual intersection of light rays.
Virtual image: an image formed by the apparent intersection of light rays.
Reflection: the bouncing of light off an object.
Refraction: the bending of light as it passes from one medium to another.
Snell's Law: The ratio of the sine of the angle of incidence to the sine of the angle
of refraction is a constant.
The refractive index of a medium: is the ratio of the speed of light in a vacuum to
its speed in a specific medium.
Critical angle: The incident angle in a dense medium when the refracted angle
in a less dense medium is 90° to the normal.
Laws of Reflection:
a) The incident, reflected ray, and the normal all lie in the same plane.
b) Angle of incidence = Angle of reflection
Use of concave mirror: gives a magnified and virtual image of an object when
entering inside the focus, providing a better view (e.g: dentists to view a cavity in
a tooth, makeup)
Use of convex mirror: gives a wider field of view than a plane mirror (e.g:
rearview mirror in cars, security mirror in shops).
Total Internal Reflection: This occurs when the angle of incidence in the denser
medium is larger than the critical angle, so light is reflected back into the denser
medium.
Parallax: The difference in apparent position of an object when viewed from
different positions.
Short-Sighted Defect (Eye Defect): Can see nearby objects clearly but cannot
bring distant objects into focus. (Corrected with concave lens)
Long-Sighted Defect (Eye Defect): Can see distant objects clearly but cannot
bring nearby objects into focus. (Corrected with convex lens)
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