A photon of electromagnetic radiation has a frequency of 2,4 GHz - NSC Technical Sciences - Question 7 - 2023 - Paper 1
Question 7
A photon of electromagnetic radiation has a frequency of 2,4 GHz.
7.1 For this photon calculate the:
7.1.1 Energy
7.1.2 Wavelength
7.2 Use the table above to ide... show full transcript
Worked Solution & Example Answer:A photon of electromagnetic radiation has a frequency of 2,4 GHz - NSC Technical Sciences - Question 7 - 2023 - Paper 1
Step 1
7.1.1 Energy
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Answer
To calculate the energy of the photon, we can use the formula:
E=hf
Where:
E is the energy in joules (J)
h is Planck's constant (6.63×10−34Js)
f is the frequency in hertz (Hz)
Substituting the given frequency:
f=2.4×109Hz
Therefore:
E=(6.63×10−34)×(2.4×109)=1.59×10−24J
Step 2
7.1.2 Wavelength
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Answer
The wavelength can be calculated using the formula:
λ=fc
Where:
λ is the wavelength in meters (m)
c is the speed of light (3×108m/s)
f is the frequency in hertz (Hz)
Now substituting the values into the equation:
λ=2.4×1093×108=0.125m
Step 3
7.2 Use the table above to identify the type of radiation to which this photon belongs.
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Answer
From the provided data, a wavelength of 0.125 m falls within the range of microwaves.
Step 4
7.3 Give ONE use of the radiation in QUESTION 7.2.
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Answer
One common use of microwaves is in microwave ovens for cooking food.
