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Physics

Stage 6 · HSC questions by topic

About this subject

Physics

Atlas organises human-reviewed questions against the NSW Stage 6 Physicssyllabus. Every published question retains its exam source and page.

Syllabus: NESA Stage 6 (2017)
Explore the NESA Stage 6 (2017) syllabus topics

Module 5: Advanced Mechanics

  • Projectile Motion
  • Circular Motion
  • Motion in Gravitational Fields

Module 6: Electromagnetism

  • Charged Particles, Conductors and Electric and Magnetic Fields
  • The Motor Effect
  • Electromagnetic Induction
  • Applications of the Motor Effect

Module 7: The Nature of Light

  • Electromagnetic Spectrum
  • Light: Wave Model
  • Light: Quantum Model
  • Light and Special Relativity

Module 8: From the Universe to the Atom

  • Origins of the Elements
  • Structure of the Atom
  • Quantum Mechanical Nature of the Atom
  • Properties of the Nucleus
  • Deep inside the Atom
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5 questions found

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2024Trial
Q5

Iodine–131 is a radioisotope used in nuclear medicine. It has a half-life of 8 hours and eventually becomes a stable isotope Xenon-131 according to the following equation:

53131I→54131Xe+γ{}^{131}_{53}\mathrm{I} \rightarrow {}^{131}_{54}\mathrm{Xe} + \gamma53131​I→
54131​Xe+
γ

24.0 mg of Iodine–131 is injected in the body of a patient.

How many milligrams of Xenon-131, produced as a result of this reaction, is present in the body after 16 hours?
A. 6.0
B. 12.0
C. 18.0
D. 24.0

1 mark
Multiple choice
2024HSC
Q7

A pure sample of polonium-210 undergoes alpha emission to produce the stable isotope lead-206.

The half-life of polonium-210 is 138 days.

At the end of 276 days, what is the ratio of polonium-210 atoms to lead-206 atoms in the sample?
A. 1:41:41:4
B. 1:31:31:3
C. 1:21:21:2
D. 1:11:11:1

1 mark
Multiple choice
2024Trial
Q7

A radioactive isotope decays by alpha and beta particle emission. Over a number of decays, the nucleon number decreases by 4 while the proton number is unchanged.

How many alpha and beta particles have been emitted?
A. 2 alpha particles and 1 beta particle
B. 1 alpha particle and 2 beta particles
C. 1 alpha particle and 1 beta particle
D. 2 alpha particles and 2 beta particles

1 mark
Multiple choice
2024Trial
Q9

Control rods and moderators play a key role in controlling the rate of fission in nuclear reactors.

Which row of the table correctly shows how this is achieved?

Control RodModerator
A.By absorbing neutrons.By slowing down fast neutrons to thermal speeds.
B.By absorbing neutrons.By speeding up slow neutrons so that a chain reaction is sustainable.
C.By increasing the capture cross-section of neutrons.By speeding up slow neutrons so that a chain reaction is sustainable.
D.By increasing the capture cross-section of neutrons.By slowing down fast neutrons to thermal speeds.
1 mark
Multiple choice
2023Trial
Q10

1227Mg^{27}_{12}\mathrm{Mg}1227​Mg can decay by beta-minus emission to one of two possible excited states of 1327Al^{27}_{13}\mathrm{Al}1327​Al. Both excited states decay by emission of a gamma photon directly to the ground state.

The diagram below shows the energy levels and two routes for the beta decay.

One route results in the emission of a gamma photon with a higher frequency than the other photon.

What is the kinetic energy for the beta particle emitted in this route?
(A) 1.33×10−13 J1.33\times10^{-13}\ \mathrm{J}1.33×10−13 J
(B) 1.63×10−13 J1.63\times10^{-13}\ \mathrm{J}1.63×10−13 (C) (D)

1 mark
Multiple choice
 
J

2.55×10−13 J2.55\times10^{-13}\ \mathrm{J}2.55×10−13 J

2.85×10−13 J2.85\times10^{-13}\ \mathrm{J}2.85×10−13 J