year 12 physics hsc sample - neap – assessment ......dtt 2019 year 12 physics hsc sample questions...

DTT 2019

Year 12 Physics HSCSample Questions

This is NOT a complete sample examination paper.

This document shows the layout of the 2019 Year 12 Physics HSC Diagnostic Topic Tests and provides some sample questions from the tests.

Neap Education (Neap) Diagnostic Topic Tests (DTTs) are licensed to be photocopied or placed on the school intranet and used only within the confines of the school purchasing them, for the purpose of examining that school’s students only. They may not be otherwise reproduced or distributed. The copyright of Neap DTTs remains with Neap. No Neap DTT or any part thereof is to be issued or passed on by any person to any party inclusive of other schools, non-practising teachers, coaching colleges, tutors, parents, students, publishing agencies or websites without the express written consent of Neap.

Copyright © 2019 Neap Education Pty Ltd ABN 43 634 499 791 91a Orrong Cres Caulfield North VIC 3161 Tel: (03) 9639 4318 2019 DTT Y12 Physics HSC Sample

TEST 11 SAMPLE QUESTIONS

Question 1 A uniform electric field is set up between two parallel plates 4 mm apart, with a potential difference of 125 V between the plates, as shown below.

5 mm

P

Q R

S0 V

+125 V

3 mm

1 mm

Points P, Q, R and S refer to four places within the uniform electric field.

What is the magnitude of the electric field between the plates?

A. 0 N C–1

B. 31.3 N C–1

C. 3.13 × 103 N C–1

D. 3.13 × 104 N C–1

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Year 12 Physics HSC DTT Sample Questions

2 2019 DTT Y12 Physics HSC Sample Copyright © 2019 Neap

Question 2 A proton is moving in a uniform magnetic field directed into the page. The proton is moving in the plane of the page and experiences a force in the direction shown below.

F

Which row of the table correctly identifies the direction of the proton’s motion and the type of motion undergone by the proton over time when it is in the magnetic field?

Direction of motion Type of motion

A.circular motion

B.circular motion

C.parabolic motion

D.parabolic motion

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Copyright © 2019 Neap 2019 DTT Y12 Physics HSC Sample 3

Question 3 (6 marks)An electron travels with a velocity of 1 × 105 m s–1 at an angle of 60° to the horizontal when it enters a uniform electric field of magnitude 5000 N C –1. Gravity acts downwards as shown in the diagram below.

60°

1 × 105 m s–1

gravity

E = 5000 N C–1

a. On the diagram above, draw the direction of the electric field vectors so that the electron is accelerated in the same direction as gravity. 1 mark

b. Show that the magnitude of the acceleration of the electron due to the electric field is

given by the equation Eq

ma � . 1 mark

c. Using a simplified ratio, compare the magnitude of the acceleration of the electron due to the electric field to the acceleration due to gravity. 2 marks

d. Describe ONE similarity and ONE difference between the trajectory of the electron due to the electric field and the acceleration due to gravity. 2 marksSA

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Question 1

One of Maxwell’s contributions to the theory of electromagnetism was the prediction of electromagnetic

waves. Maxwell was able to show the relationship c � 1��0 0

, where c is the speed of light.

How is this equation rearranged to make e 0 the subject?

A. � 1�0c

2�0

B. � 1�0c�0

C. �0�

c2�0

D. �0

� c2

�0

Question 2 One of the earliest measurements of the speed of light was made by French physicist Armand Fizeau. Using a beam of light reflected through a notched spinning wheel, he was able to calculate the speed of light to be approximately 315 000 km s–1.

Compared to the modern value of the speed of light, by what percentage was the value obtained by Fizeau higher or lower?

A. 99.9 % lower

B. 5.00 % lower

C. 4.76 % higher

D. 5.00 % higher

Question 3 To determine the temperature of a star, astronomers examine its stellar spectrum.

When a typical star’s light is examined directly, what type of spectrum do we observe?

A. continuous spectrum

B. absorption spectrum

C. emission spectrum

D. inverse spectrum

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Copyright © 2019 Neap 2019 DTT Y12 Physics HSC Sample 5

Question 4 (4 marks)Using Wien’s Law, the black body spectrum of a star can be used to find and then calculate its surface temperatures.

Other than temperature, identify and describe TWO other properties of stars that can be determined using stellar spectra. You may use a labelled diagram to support your answer.

Question 5 (6 marks)Monochromatic laser light of wavelength 633 nm is incident on a double slit with slit separation 0.020 mm. An interference pattern is observed on a screen placed 3.0 m directly behind the double slit.

a. Calculate the angular separation of the central maximum and first order maxima. 1 mark

b. Explain how dark fringes are formed in the interference pattern. Include a labelled diagram to support your answer. 3 marksSA

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Question 6 Which one of the following is a flaw in Rutherford’s model of the atom?

A. The nucleus was not positive.

B. The electrons were not outside the nucleus.

C. The number of electrons did not equal the number of protons.

D. The electrons were not in quantised orbits.

Question 7 Which row of the table correctly describes the frequency and energy of a longer wavelength when compared to a shorter wavelength?

Frequency Energy

A. lower higherB. higher higher

C. lower lowerD. higher lower

Question 8 (6 marks)

a. On the axes below, sketch a Hertzsprung–Russell diagram by plotting the two standard axes. Label the x-axis and show the position of the Main Sequence, giant and white dwarf stars. 4 marks

lum

inos

ity (

L )

b. Sketch the evolutionary path of a Sun-like star on your Hertzsprung–Russell diagram above. 2 marks

END OF SAmplE QuESTiONS

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