A-LEVEL OCR ADVANCING PHYSICS B SUPERSET WITH QUESTIONS AND ANSWERS AND WELL VERIFIED ANSWERS [GRADED A+] ACTUAL 100%
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A-LEVEL OCR ADVANCING PHYSICS B
SUPERSET WITH QUESTIONS AND
ANSWERS AND WELL VERIFIED ANSWERS
[GRADED A+] ACTUAL 100%
Curvature - ANS---The amount by which a line is curved.
Radius - ANS---The curvature is the reciprocal of the _____.
.
Focal Length - ANS---The power of a lens is the reci...
A-LEVEL OCR ADVANCING PHYSICS B
SUPERSET WITH QUESTIONS AND
ANSWERS AND WELL VERIFIED ANSWERS
[GRADED A+] ACTUAL 100%
Curvature - ANS✔✔---The amount by which a line is curved.
Radius - ANS✔✔---The curvature is the reciprocal of the _____.
.
Focal Length - ANS✔✔---The power of a lens is the reciprocal of its _____ _____.
Focal Length - ANS✔✔---The distance between the centre of a lens and its focus.
Plane - ANS✔✔---_____ wave-fronts are seen to have negligible curvature.
Rays - ANS✔✔---When light is modelled as _____, the light travels in lines.
Wavefronts - ANS✔✔---When light is modelled as _____, the light travels as parallel
lines/bars, perpendicular to their motion
Infinite - ANS✔✔---The radius of a line with no curvature is assumed to be _____.
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
Focus - ANS✔✔---The point at which light converges.
Curvature - ANS✔✔---Lenses add and remove _____.
Power - ANS✔✔---The amount of curvature added by a lens is known as its _____.
Dioptres - ANS✔✔---Lens power is measured in _____.
,D - ANS✔✔---The unit for dioptres.
.
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
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
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.
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
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