NZQA Level 3 — Physics Exam

NZQA Level 3 — Physics
Exam

, NZQA Level 3 — Physics Exam




Question 1
Which mapping traces Electromagnetic Induction and Evaluation and Conclusion to the
appropriate respective focuses?
A. First concern: Practical Investigation (AS 91521); second concern: Practical Investigation (AS 91521)
B. First concern: Practical Investigation (AS 91521); second concern: Electrical Systems (AS 91526)
C. First concern: Electrical Systems (AS 91526); second concern: Electrical Systems (AS 91526)
D. First concern: Electrical Systems (AS 91526); second concern: Practical Investigation (AS 91521)
Correct Answer: D

Full Explanation:
Electrical Systems (AS 91526) addresses Electromagnetic Induction. Practical Investigation (AS 91521)
addresses Evaluation and Conclusion. The first concern therefore calls for the first area, and the second
concern calls for the second area. Exchanging the areas or assigning both concerns to one area loses the
distinction between these focuses.


Question 2
A discussion of Mechanical Systems (AS 91524) has shifted to , minimum impedance,
maximum current). Which concern would bring it back to the intended focus?
A. Direct Current (DC) Circuits
B. Translational Motion and Momentum
C. , minimum impedance, maximum current)
D. Interference and Diffraction
Correct Answer: B

Full Explanation:
Mechanical Systems (AS 91524) includes consideration of Translational Motion and Momentum. The
alternative emphasis, , minimum impedance, maximum current), belongs with Component reactances.
Returning to the intended concern restores the relevant scope of the discussion.


Question 3
What conclusion about the relevant areas follows when Gravitational field strength (g= r
2 GM and Data Processing and Graphical Analysis are considered separately?
A. First concern: Practical Investigation (AS 91521); second concern: Practical Investigation (AS 91521)
B. First concern: Mechanical Systems (AS 91524); second concern: Mechanical Systems (AS 91524)
C. First concern: Practical Investigation (AS 91521); second concern: Mechanical Systems (AS 91524)
D. First concern: Mechanical Systems (AS 91524); second concern: Practical Investigation (AS 91521)
Correct Answer: D

Full Explanation:
Mechanical Systems (AS 91524) addresses Gravitational field strength (g= r 2 GM. Practical Investigation
(AS 91521) addresses Data Processing and Graphical Analysis. The first concern therefore calls for the first
area, and the second concern calls for the second area. Exchanging the areas or assigning both concerns
to one area loses the distinction between these focuses.




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, NZQA Level 3 — Physics Exam




Question 4
A discussion of Modern Physics (AS 91525) has shifted to , condition where X L =X C.
Which concern would bring it back to the intended focus?
A. , condition where X L =X C
B. Atomic Structure and Spectra
C. Sound Waves and Acoustics
D. Circular Motion and Gravitation
Correct Answer: B

Full Explanation:
Modern Physics (AS 91525) includes consideration of Atomic Structure and Spectra. The alternative
emphasis, , condition where X L =X C, belongs with Component reactances. Returning to the intended
concern restores the relevant scope of the discussion.


Question 5
A discussion of Modern Physics (AS 91525) has shifted to Constructing lines of best fit
and worst lines of best fit on graphs to determine maximum and minimum gradients.
Which concern would bring it back to the intended focus?

A. The Photoelectric Effect (threshold frequency, work function Φ, maximum kinetic energy of
photoelectrons: E k(max)
B. Electrical resonance in LCR series circuits (resonant frequency formula: f 0 = 2π LC 1
C. Strings fixed at both ends, or one end free (wavelength and frequency harmonics: λ n = n 2L )
D. Constructing lines of best fit and worst lines of best fit on graphs to determine maximum and minimum
gradients
Correct Answer: A

Full Explanation:
Modern Physics (AS 91525) includes consideration of The Photoelectric Effect (threshold frequency, work
function Φ, maximum kinetic energy of photoelectrons: E k(max). The alternative emphasis, Constructing
lines of best fit and worst lines of best fit on graphs to determine maximum and minimum gradients,
belongs with Practical Investigation (AS 91521). Returning to the intended concern restores the relevant
scope of the discussion.


Question 6
Which distinction is defensible when comparing the concern with =mrω 2 ) to the
concern with Horizontal and banked curves, conical pendulums?
A. First concern: Applications; second concern: Applications
B. First concern: Mechanical Systems (AS 91524); second concern: Mechanical Systems (AS 91524)
C. First concern: Applications; second concern: Mechanical Systems (AS 91524)
D. First concern: Mechanical Systems (AS 91524); second concern: Applications
Correct Answer: D

Full Explanation:
Mechanical Systems (AS 91524) addresses =mrω 2 ). Applications addresses Horizontal and banked
curves, conical pendulums. The first concern therefore calls for the first area, and the second concern calls
for the second area. Exchanging the areas or assigning both concerns to one area loses the distinction
between these focuses.




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, NZQA Level 3 — Physics Exam




Question 7
Competing assignments have been proposed for Faraday’s Law of Induction (EMF=− Δt
and Phasor diagrams for series AC circuits. Which assignment retains the appropriate
distinction?

A. First concern: Component reactances; second concern: Component reactances
B. First concern: Electrical Systems (AS 91526); second concern: Electrical Systems (AS 91526)
C. First concern: Component reactances; second concern: Electrical Systems (AS 91526)
D. First concern: Electrical Systems (AS 91526); second concern: Component reactances
Correct Answer: D

Full Explanation:
Electrical Systems (AS 91526) addresses Faraday’s Law of Induction (EMF=− Δt. Component reactances
addresses Phasor diagrams for series AC circuits. The first concern therefore calls for the first area, and
the second concern calls for the second area. Exchanging the areas or assigning both concerns to one
area loses the distinction between these focuses.


Question 8
A discussion of Wave Systems (AS 91523) has shifted to , minimum impedance,
maximum current). Which concern would bring it back to the intended focus?
A. , minimum impedance, maximum current)
B. Single-slit diffraction principles
C. Mass-energy equivalence (E=mc 2
D. AC power calculations (P=V rms I rms )
Correct Answer: B

Full Explanation:
Wave Systems (AS 91523) includes consideration of Single-slit diffraction principles. The alternative
emphasis, , minimum impedance, maximum current), belongs with Component reactances. Returning to
the intended concern restores the relevant scope of the discussion.


Question 9
Two sets of observations concern Principles of capacitance (C= V Q and Capacitive
reactance (X C = ωC 1 ), respectively. Which allocation would keep the analysis directed
at the relevant areas?

A. First concern: Component reactances; second concern: Electrical Systems (AS 91526)
B. First concern: Electrical Systems (AS 91526); second concern: Electrical Systems (AS 91526)
C. First concern: Component reactances; second concern: Component reactances
D. First concern: Electrical Systems (AS 91526); second concern: Component reactances
Correct Answer: D

Full Explanation:
Electrical Systems (AS 91526) addresses Principles of capacitance (C= V Q. Component reactances
addresses Capacitive reactance (X C = ωC 1 ). The first concern therefore calls for the first area, and the
second concern calls for the second area. Exchanging the areas or assigning both concerns to one area
loses the distinction between these focuses.




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