PHYSICS
JAMB 2007 - Question 9
Physics 2007 JAMB Past Questions - Question 9: The energy E of a photon and its wavelength are related by E/.=X e - the numerical value of X is
Choose the correct answers from the options given.
A:
B:
C:
D:
Correct Answer
C
Explanation
The energy (E) of a photon and its wavelength (λ) are related by the equation:
E = h * c / λ
Where:
- E is the energy of the photon.
- h is the Planck constant, approximately 6.62607015 x 10^-34 joule seconds.
- c is the speed of light in a vacuum, approximately 299,792,458 meters per second.
- λ is the wavelength of the photon.
To find the numerical value of X, you can rearrange the equation as follows:
E/λ = h * c
Now, you can calculate the value of X using the given constants:
X = h * c
X ≈ (6.62607015 x 10^-34 J·s) * (299,792,458 m/s)
X ≈ 1.98644586 x 10^-25 J·m
So, the numerical value of X is approximately 1.98644586 x 10^-25 J·m.
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