BTEC Applied Science Unit One Physics
Define the amplitude of a wave correct answerThe distance from the rest position to the top of the
wave
Define the period of a wave correct answerThe time taken for one wavelength to pass a point
Define the frequency of a wave correct answerThe number of waves per second
How many ms are in 1s? correct answer1000
Define coherent light correct answerCoherent light has the same frequency/wavelength and is in phase
Define a transverse wave correct answerThe oscillations are perpendicular to the direction of travel
Define a longitudinal wave correct answerThe oscillations are parallel to the direction of travel
How many radians are in 360 degrees? correct answer2 pi
Define phase difference correct answerPhase difference shows how much two waves are in line with
each other. Measured in fractions or degrees
What is constructive interference? correct answerWhen two waves in phase add together to make a
larger amplitude wave
What is destructive interference? correct answerWhen two waves in antiphase cancel each other out
, How do you make a standing wave? correct answerA wave is transmitted along a string, reflects back
and the two waves superimpose with each other
What is coherent light? correct answerlight of the same wavelength that is in phase
What is refraction? correct answerWhen light charges from one media to another and charges angle and
direction because it slows down
What is total internal reflection? correct answerWhen light reflects internally inside a piece of glass
rather than refracting out because the angle of incidence is above the critical angle
What is an emission spectra? correct answerWavelengths of light emitted by electrons. They can be
used to identify elements
What is an endoscope? correct answerA medical tool that uses total internal reflection to see inside a
body without surgery
What is the difference between single mode and multi mode fibres? correct answerSingle mode has a
thin core and carries less information a longer distance. Multi mode is suitable for LAN as it carries lots
of signals but not far
State the EM spectrum in order correct answerRadio waves
Microwaves
Infrared radiation
Visible light
Ultraviolet
X-rays
Define the amplitude of a wave correct answerThe distance from the rest position to the top of the
wave
Define the period of a wave correct answerThe time taken for one wavelength to pass a point
Define the frequency of a wave correct answerThe number of waves per second
How many ms are in 1s? correct answer1000
Define coherent light correct answerCoherent light has the same frequency/wavelength and is in phase
Define a transverse wave correct answerThe oscillations are perpendicular to the direction of travel
Define a longitudinal wave correct answerThe oscillations are parallel to the direction of travel
How many radians are in 360 degrees? correct answer2 pi
Define phase difference correct answerPhase difference shows how much two waves are in line with
each other. Measured in fractions or degrees
What is constructive interference? correct answerWhen two waves in phase add together to make a
larger amplitude wave
What is destructive interference? correct answerWhen two waves in antiphase cancel each other out
, How do you make a standing wave? correct answerA wave is transmitted along a string, reflects back
and the two waves superimpose with each other
What is coherent light? correct answerlight of the same wavelength that is in phase
What is refraction? correct answerWhen light charges from one media to another and charges angle and
direction because it slows down
What is total internal reflection? correct answerWhen light reflects internally inside a piece of glass
rather than refracting out because the angle of incidence is above the critical angle
What is an emission spectra? correct answerWavelengths of light emitted by electrons. They can be
used to identify elements
What is an endoscope? correct answerA medical tool that uses total internal reflection to see inside a
body without surgery
What is the difference between single mode and multi mode fibres? correct answerSingle mode has a
thin core and carries less information a longer distance. Multi mode is suitable for LAN as it carries lots
of signals but not far
State the EM spectrum in order correct answerRadio waves
Microwaves
Infrared radiation
Visible light
Ultraviolet
X-rays
