BTEC Applied Science Unit One Physics | Latest
Questions And Answers | 100% Correct
Define the amplitude of a wave ANS The distance from the rest position to the top of the
wave
Define the period of a wave ANS The time taken for one wavelength to pass a point
Define the frequency of a wave ANS The number of waves per second
How many ms are in 1s? ANS 1000
Define coherent light ANS Coherent light has the same frequency/wavelength and is in
phase
Define a transverse wave ANS The oscillations are perpendicular to the direction of travel
Define a longitudinal wave ANS The oscillations are parallel to the direction of travel
How many radians are in 360 degrees? ANS 2 pi
Define phase difference ANS Phase difference shows how much two waves are in line with
each other. Measured in fractions or degrees
What is constructive interference? ANS When two waves in phase add together to make a
larger amplitude wave
What is destructive interference? ANS When two waves in antiphase cancel each other out
How do you make a standing wave? ANS A wave is transmitted along a string, reflects back
and the two waves superimpose with each other
What is coherent light? ANS light of the same wavelength that is in phase
What is refraction? ANS When light charges from one media to another and charges angle
and direction because it slows down
What is total internal reflection? ANS When 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? ANS Wavelengths of light emitted by electrons. They can be
used to identify elements
Questions And Answers | 100% Correct
Define the amplitude of a wave ANS The distance from the rest position to the top of the
wave
Define the period of a wave ANS The time taken for one wavelength to pass a point
Define the frequency of a wave ANS The number of waves per second
How many ms are in 1s? ANS 1000
Define coherent light ANS Coherent light has the same frequency/wavelength and is in
phase
Define a transverse wave ANS The oscillations are perpendicular to the direction of travel
Define a longitudinal wave ANS The oscillations are parallel to the direction of travel
How many radians are in 360 degrees? ANS 2 pi
Define phase difference ANS Phase difference shows how much two waves are in line with
each other. Measured in fractions or degrees
What is constructive interference? ANS When two waves in phase add together to make a
larger amplitude wave
What is destructive interference? ANS When two waves in antiphase cancel each other out
How do you make a standing wave? ANS A wave is transmitted along a string, reflects back
and the two waves superimpose with each other
What is coherent light? ANS light of the same wavelength that is in phase
What is refraction? ANS When light charges from one media to another and charges angle
and direction because it slows down
What is total internal reflection? ANS When 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? ANS Wavelengths of light emitted by electrons. They can be
used to identify elements
