BTEC Applied Science
2023-2024-2025 Sample
Test Exam ; Answered
Questions 100% Accurate
(Graded A)
T
Ts & Cs; Question,Answer ie,or can be the opp Answer,Question depending on department,
institution etc
“terminology” {s} in this set ; [ forty eight ] , 48 .
(First hand)
1.Periodic time.?
the time taken (in seconds) for one complete cycle of a wave, vibration, or oscillation
2. T = 1/f. ?
Time period, T (in seconds) and frequency, f (in hertz) .
3. wave speed. ?
The distance in metres (m) travelled by a wave in one second (s).
4. Wavelength. ?
The distance (in metres) between two nearest corresponding points on a wave, e.g. the
distance between two peaks (crests) . ?
5.Frequency.?
the number of waves produced in one second or the number of waves that pass a point
each second .
6.Amplitude.?
the maximum displacement of a wave from its undisturbed position
7.Oscillation.?
, a regular repetitive motion, e.g. a weight on a spring bouncing up and down, or a
pendulum swinging backwards and forwards
8.Transverse.?
a wave in which the direction of oscillations is perpendicular (at right angles) to the
direction of the wave
9.Longitudinal.?
a wave in which the direction of oscillations is parallel to the direction of the wave
10.Displacement.?
the oscillating distance of a point on a wave from its undisturbed position
11.Coherence.?
two or more sources of waves that have the same frequency and are in phase or have a
constant phase difference
path difference
the difference between the distances that two waves have travelled when they meet at a
point (usually measured as a multiple of wavelengths)
phase difference
the amount by which one wave leads or lags (falls behind) another wave (usually
measured in degrees, where 360⁰ corresponds to one full wave cycle)
in phase
when two waves have zero phase difference
antiphase (completely out of phase)
when two waves have a phase difference of 180⁰ (half a wave cycle)
superposition
when two or more waves combine; their displacements are added together
(displacements can cancel each other out)
constructive interference
when the superposition of two waves cause the displacement to increase (greater
amplitude)
destructive interference
when the superposition of two waves cause the displacement to decrease (smaller
amplitude, even zero)
diffraction grating
an optical device that has a periodic structure of many slits which splits and diffracts
light into several beams. Different frequencies (wavelengths) of light diffract by different
amounts
(atomic) emission spectra
the range of frequencies of light emitted by an element because of electrons moving
between energy levels within atoms
identifying gases
2023-2024-2025 Sample
Test Exam ; Answered
Questions 100% Accurate
(Graded A)
T
Ts & Cs; Question,Answer ie,or can be the opp Answer,Question depending on department,
institution etc
“terminology” {s} in this set ; [ forty eight ] , 48 .
(First hand)
1.Periodic time.?
the time taken (in seconds) for one complete cycle of a wave, vibration, or oscillation
2. T = 1/f. ?
Time period, T (in seconds) and frequency, f (in hertz) .
3. wave speed. ?
The distance in metres (m) travelled by a wave in one second (s).
4. Wavelength. ?
The distance (in metres) between two nearest corresponding points on a wave, e.g. the
distance between two peaks (crests) . ?
5.Frequency.?
the number of waves produced in one second or the number of waves that pass a point
each second .
6.Amplitude.?
the maximum displacement of a wave from its undisturbed position
7.Oscillation.?
, a regular repetitive motion, e.g. a weight on a spring bouncing up and down, or a
pendulum swinging backwards and forwards
8.Transverse.?
a wave in which the direction of oscillations is perpendicular (at right angles) to the
direction of the wave
9.Longitudinal.?
a wave in which the direction of oscillations is parallel to the direction of the wave
10.Displacement.?
the oscillating distance of a point on a wave from its undisturbed position
11.Coherence.?
two or more sources of waves that have the same frequency and are in phase or have a
constant phase difference
path difference
the difference between the distances that two waves have travelled when they meet at a
point (usually measured as a multiple of wavelengths)
phase difference
the amount by which one wave leads or lags (falls behind) another wave (usually
measured in degrees, where 360⁰ corresponds to one full wave cycle)
in phase
when two waves have zero phase difference
antiphase (completely out of phase)
when two waves have a phase difference of 180⁰ (half a wave cycle)
superposition
when two or more waves combine; their displacements are added together
(displacements can cancel each other out)
constructive interference
when the superposition of two waves cause the displacement to increase (greater
amplitude)
destructive interference
when the superposition of two waves cause the displacement to decrease (smaller
amplitude, even zero)
diffraction grating
an optical device that has a periodic structure of many slits which splits and diffracts
light into several beams. Different frequencies (wavelengths) of light diffract by different
amounts
(atomic) emission spectra
the range of frequencies of light emitted by an element because of electrons moving
between energy levels within atoms
identifying gases
