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, SECTION A
1. A spring obeys Hooke's law. A force of 24 N causes an extension of 8 cm. What is the
spring constant?
A 192 N/m
B 3 N/m
C 0.33 N/m
D 300 N/m
(Total for Question 1 = 1 mark)
2. Which of the following correctly describes a brittle material on a stress-strain graph?
A Large plastic deformation before fracture
B Fractures at low strain with little or no plastic deformation
C Returns to original shape after the load is removed
D Undergoes large extension as load increases
(Total for Question 2 = 1 mark)
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, 3. Density ρ is calculated using:
𝑚
𝜌=
𝑉
The percentage uncertainty in mass is 1.2% and in volume is 3.5%. What is the
percentage uncertainty in density?
A 4.7%
B 2.3%
C 4.2%
D 1.3%
(Total for Question 3 = 1 mark)
4. Which of the following is the correct formula for elastic strain energy stored in a
stretched spring?
A E = Fx
B E = kx
C E = ½Fx
D E = ½kx
(Total for Question 4 = 1 mark)
5. A sound wave has a frequency of 500 Hz and a wavelength of 0.68 m. What is its
speed?
A 735 m/s
B 340 m/s
C 0.00136 m/s
D 136 m/s
(Total for Question 5 = 1 mark)
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, SECTION A
1. A spring obeys Hooke's law. A force of 24 N causes an extension of 8 cm. What is the
spring constant?
A 192 N/m
B 3 N/m
C 0.33 N/m
D 300 N/m
(Total for Question 1 = 1 mark)
2. Which of the following correctly describes a brittle material on a stress-strain graph?
A Large plastic deformation before fracture
B Fractures at low strain with little or no plastic deformation
C Returns to original shape after the load is removed
D Undergoes large extension as load increases
(Total for Question 2 = 1 mark)
for more: tyrionpapers.com
, 3. Density ρ is calculated using:
𝑚
𝜌=
𝑉
The percentage uncertainty in mass is 1.2% and in volume is 3.5%. What is the
percentage uncertainty in density?
A 4.7%
B 2.3%
C 4.2%
D 1.3%
(Total for Question 3 = 1 mark)
4. Which of the following is the correct formula for elastic strain energy stored in a
stretched spring?
A E = Fx
B E = kx
C E = ½Fx
D E = ½kx
(Total for Question 4 = 1 mark)
5. A sound wave has a frequency of 500 Hz and a wavelength of 0.68 m. What is its
speed?
A 735 m/s
B 340 m/s
C 0.00136 m/s
D 136 m/s
(Total for Question 5 = 1 mark)
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