1. Sensible values – waves & quantum – with answers
David Bailey
© Class Leading Ltd. 2013
Permission granted for non-commercial educational use provided that this copyright notice is included.
07/08/2019

2. What is a sensible value for the wavelength of visible light?
A = 5 x m
B = 5 x 10-7 m
C = 5 x 107 m
D = 5 x 1014 m
…and why do you think that? 1
© Class Leading Ltd. 2013
Permission granted for non-commercial educational use provided that this copyright notice is included.

3. What is a sensible value for the frequency of visible light?
A = 6 x Hz
B = 6 x 10-7 Hz
C = 6 x 107 Hz
D = 6 x 1014 Hz
…and why do you think that? 2
© Class Leading Ltd. 2013
Permission granted for non-commercial educational use provided that this copyright notice is included.

4. What is a sensible value for the speed of a fast moving electron?
A = 2 x ms-1
B = 2 x 10-6 ms-1
C = 2 x 106 ms-1
D = 2 x 1010 ms-1
…and why do you think that? 3
© Class Leading Ltd. 2013
Permission granted for non-commercial educational use provided that this copyright notice is included.

5. …and why do you think that?
What is a sensible value for a de Broglie wavelength of a fast moving muon?
A = 1 x m
B = 1 x m
C = 1 x 1012 m
D = 1 x 1054 m
…and why do you think that? 4
© Class Leading Ltd. 2013
Permission granted for non-commercial educational use provided that this copyright notice is included.

6. …and why do you think that?
What is a sensible value for the ionisation energy to remove one electron from an atom?
A = 4 x J
B = 4 x J
C = 1 x 1026 J
D = 1 x 1017 J
…and why do you think that? 5
© Class Leading Ltd. 2013
Permission granted for non-commercial educational use provided that this copyright notice is included.

7. What is a sensible value for the refractive index of glass?
…and why do you think that? 6
© Class Leading Ltd. 2013
Permission granted for non-commercial educational use provided that this copyright notice is included.