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10.1 Definier die term elektromagnetiese golwe - NSC Technical Sciences - Question 10 - 2021 - Paper 2

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10.1 Definier die term elektromagnetiese golwe. 10.2 Die elektromagnetiese spektrum bestaan uit die volgende elektromagnetiese golwe: ultraviolet strale, mikrogolwe... show full transcript

Worked Solution & Example Answer:10.1 Definier die term elektromagnetiese golwe - NSC Technical Sciences - Question 10 - 2021 - Paper 2

Step 1

10.1 Definier die term elektromagnetiese golwe.

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Answer

Electromagnetic waves are changing magnetic and electric fields that propagate mutually perpendicular to each other and the direction of wave propagation.

Step 2

10.2.1 Langste golflengte?

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Answer

The longest wavelength in the electromagnetic spectrum is radio waves.

Step 3

10.2.2 Hoogste frekwensie?

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Answer

The highest frequency in the electromagnetic spectrum is gamma rays.

Step 4

10.3 'n Foton van blou lig het 'n energie van 1,75 x 10^-48 J.

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Answer

To determine whether the photon is green or indigo, we use the formula for energy:

E=hfE = hf

where:

  • h=6,63×10−34J sh = 6,63 \times 10^{-34} J \, s (Planck's constant)
  • f=7,50×1014Hzf = 7,50 \times 10^{14} Hz (frequency of light)

Calculating the energy:

E=(6,63×10−34)(7,50×1014)=4,97×10−19JE = (6,63 \times 10^{-34})(7,50 \times 10^{14}) = 4,97 \times 10^{-19} J

Since the energy of the photon is more than the energy of a photon of blue light, it indicates that this is a photon of indigo light.

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