IB physics-Topic1-Qc#5-Paper2- A radio wave of wavelength λ is incident on a conductor

Solution of IB Physics past papers questions .
Qc12
A radio wave of wavelength λ is incident on a conductor. The graph shows the variation with wavelength λ of the maximum distance d travelled inside the conductor.
a. Suggest why it is unlikely that the relation between d and λ is linear.
b. For λ = 5.0 x 105 m, calculate the fractional uncertainty in d.
c. percentage uncertainty in d 2.
d. The graph shows the variation with wavelength λ of d 2. Error bars are not shown and the line of best-fit has been drawn.
A student states that the equation of the line of best-fit is d 2 = a + bλ. When d 2 and λ are expressed in terms of fundamental SI units, the student finds that a = 0.040 x 10–4 and b = 1.8 x 10–11.
State the fundamental SI unit of the constant a and of the constant b.
e. Determine the distance travelled inside the conductor by very high frequency electromagnetic waves.
Topic#1 playlist:

[shuaibalam]

Very nice and thorough explanation! Thanks for the video