Name: _______________________________________________
Unit 1 Physics past paper questions
Date:
Time:
Total marks available:
Total marks achieved: ______
,Questions
Q1.
Figure 1 shows a stationary wave on a vibrating string.
(i) Give the number of complete wavelengths shown on the string in Figure 1.
(1)
number of complete wavelengths = ...........................................................
(ii) Add a letter X to Figure 1 to show the position of one antinode.
(1)
(iii) Which process causes the stationary wave on the string in Figure 1?
(1)
A compression
B diffraction
C regeneration
D resonance
(iv) The string in Figure 1 is 1.0 m long.
The string has a mass of 2.1 g.
The tension in the string is 3.6 N.
Calculate the speed, v, of the wave on the string in Figure 1.
Use the equation:
Show your working.
(4)
, speed of wave = ........................................................... m/s
(Total for question = 7 marks)
Q2.
Mobile phones should receive a signal when the user is in range of a transmitter.
There are places where mobile phone signals cannot be received even when the user is in range of a
transmitter. Figure 6 shows a mobile phone with no signal.
Figure 6
For a mobile phone to receive a signal, the intensity must be above 9 × 10 –10 Wm –2.
–2
At a distance of 1.1 m from the transmitter, the output signal has an intensity of 1.5 Wm and the power
given by the constant k is 1.8 W.
Calculate the maximum distance from the transmitter that a signal of intensity 9 × 10 –10 Wm –2 can be
received by a mobile phone.
Give your answer in kilometres (km).
Use the equation I = k /r 2
Show your working.
(4)
, maximum distance = ........................................................... km
(Total for question = 4 marks)
Q3.
A digital signal has a value of 1.0 V when it is on and 0.0 V when it is off.
The digital signal changes every second.
An optical fibre is made of glass.
The speed of red light in air is 3.0 × 108 m s−1.
The speed of red light in the glass is 2.0 × 108 m s−1.
A ray of red light enters the glass from the air with an angle of incidence of 30°.
Calculate the angle of refraction, r, of the red light in the glass.
Show your working.
Unit 1 Physics past paper questions
Date:
Time:
Total marks available:
Total marks achieved: ______
,Questions
Q1.
Figure 1 shows a stationary wave on a vibrating string.
(i) Give the number of complete wavelengths shown on the string in Figure 1.
(1)
number of complete wavelengths = ...........................................................
(ii) Add a letter X to Figure 1 to show the position of one antinode.
(1)
(iii) Which process causes the stationary wave on the string in Figure 1?
(1)
A compression
B diffraction
C regeneration
D resonance
(iv) The string in Figure 1 is 1.0 m long.
The string has a mass of 2.1 g.
The tension in the string is 3.6 N.
Calculate the speed, v, of the wave on the string in Figure 1.
Use the equation:
Show your working.
(4)
, speed of wave = ........................................................... m/s
(Total for question = 7 marks)
Q2.
Mobile phones should receive a signal when the user is in range of a transmitter.
There are places where mobile phone signals cannot be received even when the user is in range of a
transmitter. Figure 6 shows a mobile phone with no signal.
Figure 6
For a mobile phone to receive a signal, the intensity must be above 9 × 10 –10 Wm –2.
–2
At a distance of 1.1 m from the transmitter, the output signal has an intensity of 1.5 Wm and the power
given by the constant k is 1.8 W.
Calculate the maximum distance from the transmitter that a signal of intensity 9 × 10 –10 Wm –2 can be
received by a mobile phone.
Give your answer in kilometres (km).
Use the equation I = k /r 2
Show your working.
(4)
, maximum distance = ........................................................... km
(Total for question = 4 marks)
Q3.
A digital signal has a value of 1.0 V when it is on and 0.0 V when it is off.
The digital signal changes every second.
An optical fibre is made of glass.
The speed of red light in air is 3.0 × 108 m s−1.
The speed of red light in the glass is 2.0 × 108 m s−1.
A ray of red light enters the glass from the air with an angle of incidence of 30°.
Calculate the angle of refraction, r, of the red light in the glass.
Show your working.
