A-LEVEL OCR ADVANCING PHYSICS B SUPER SET [WELL IDENTIFIED] REAL!!REAL!!!
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A-LEVEL OCR ADVANCING PHYSICS B
SUPER SET [WELL IDENTIFIED]
REAL!!REAL!!!
Curvature - ANS---The amount by which a line is curved.
Radius - ANS---The curvature is the reciprocal of the _____.
Rays - ANS---When light is modelled as _____, the light travels in lines.
Wavefronts - ANS---When li...
Image Distance - ANS✔✔---_____ _____ = Magnification x u
Object Distance - ANS✔✔---_____ _____ = v / Magnification
Charge Coupled Device - ANS✔✔---The full name for a CCD is a _____ _____
_____.
Picture Element - ANS✔✔---The full name for a pixel is a _____ _____.
Binary - ANS✔✔---The system of recording data as either 1s or 0s
Byte - ANS✔✔---The name for 8 bits.
0 - ANS✔✔---The smallest value that can be represented with 8 bits.
255 - ANS✔✔---The largest value that can be represented with 8 bits.
256 - ANS✔✔---The number of different values that can be represented with 8 bits.
N - ANS✔✔---__ = 2ᵇ
b - ANS✔✔---__ = log₂N
Resolution - ANS✔✔---_____ = Width of object / Number of pixels across object
,Brighter - ANS✔✔---By increasing the value on each pixel until the brightest pixel is
255, the image can be made _____.
Smooth - ANS✔✔---By taking the mean or median of a pixel and its surrounding
pixels, an image can be made more _____.
Edges - ANS✔✔---By subtracting the values of neighbouring pixels, _____ can be
found.
Contrast - ANS✔✔---By scaling up the range of values the _____ can be increased.
Frequency - ANS✔✔---The value denoted by the letter f.
Speed - ANS✔✔---The value denoted by the letter v.
Wavelength - ANS✔✔---The value denoted by the letter λ.
v - ANS✔✔---__ = f x λ
f - ANS✔✔---__ = v / λ
c - ANS✔✔---The letter used to denote the speed of light in a vacuum.
3 - ANS✔✔---The speed of light in a vacuum is __x10⁸ ms⁻¹.
8 - ANS✔✔---The speed of light in a vacuum is 3x10^__ ms⁻¹.
T - ANS✔✔---__ = 1 / f
f - ANS✔✔---__ = 1 / T
Time Period - ANS✔✔---The value denoted by the letter T.
Polarised - ANS✔✔---_____ light oscillates in only one plane.
No - ANS✔✔---Polarised light passing through a filter placed perpendicular to its
oscillation will have _____ resultant oscillation.
Nanometres - ANS✔✔---The full name of the unit which wavelengths of visible light is
usually given in.
nm - ANS✔✔---The abbreviation for the unit nanometres.
Signal - ANS✔✔---A transfer of information.
Analogue - ANS✔✔---Continuous signals are described as being _____.
Digital - ANS✔✔---Discrete signals are described as being _____.
, Noise - ANS✔✔---Random distortion on a signal which can occur in digitisation or
transmission.
Sampling - ANS✔✔---Converting the displacement of a continuous signal into digital
information.
Resolution - ANS✔✔---The smallest determinable change in potential difference.
Resolution - ANS✔✔---_____ = p.d. Range of Signal / Number of Quantisation Levels
p.d. Range of Signal - ANS✔✔---_____ of _____ _____ = Resolution x Number of
Quantisation Levels
Number of Quantisation Levels - ANS✔✔---_____ of _____ _____ = p.d. Range of
Signal x Resolution
Maximum Useful Number of Levels - ANS✔✔---_____ _____ _____ of _____ = Total
Signal Variation / Noise Variation
Total Signal Variation - ANS✔✔---_____ _____ _____ = Maximum Useful Number of
Levels x Noise Variation
Noise Variation - ANS✔✔---_____ _____ = Total Signal Variation / Maximum Useful
Number of Levels
b - ANS✔✔---__ = log₂(Total Signal Variation / Noise variation)
2 - ANS✔✔---Minimum Sampling Rate > __ x Highest Frequency
Highest Frequency - ANS✔✔---Minimum Sampling Rate > 2 x _____ _____
Minimum Sampling Rate - ANS✔✔---_____ _____ _____ > 2 x Highest Frequency
Alias - ANS✔✔---An incorrect digital reconstruction of a continuous signal as a result
of a low sampling rate.
Bit Rate - ANS✔✔---_____ _____ = Sample Rate x Bits per Sample
Bits per Sample - ANS✔✔---_____ per _____ = Bit Rate / Sample Rate
Sample Rate - ANS✔✔---____ _____ = Bit Rate / Bits per Sample
Signal Duration - ANS✔✔---_____ _____ = Size of Signal (bits) / Bit Rate
Size of Signal - ANS✔✔---_____ of _____ = Signal Duration x Bit Rate
Bit Rate - ANS✔✔---_____ _____ = Size of Signal (bits) / Signal Duration
Cyber-bullying - ANS✔✔---Harassing or abusing somebody over a digital device.
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